diff --git a/de-de/git-de.html.markdown b/de-de/git-de.html.markdown
index 592b3a48..b903a9d1 100644
--- a/de-de/git-de.html.markdown
+++ b/de-de/git-de.html.markdown
@@ -26,7 +26,7 @@ Eine Versionsverwaltung erfasst die Änderungen einer Datei oder eines Verzeichn
 * Verteilte Versionsverwaltung konzentriert sich auf das Teilen der Änderungen. Jede Änderung hat eine eindeutige ID.
 * Verteilte Systeme haben keine vorbestimmte Struktur. Ein SVN-ähnliches, zentrales System wäre mit Git ebenso umsetzbar.
 
-[Weiterführende Informationen](http://git-scm.com/book/en/Getting-Started-About-Version-Control)
+[Weiterführende Informationen](https://git-scm.com/book/en/v2/Getting-Started-About-Version-Control)
 
 ### Warum Git?
 
@@ -50,7 +50,7 @@ Ein Repository besteht in Git aus dem .git-Verzeichnis und dem Arbeitsverzeichni
 ### .git-Verzeichnis (Teil des Repositorys)
 
 Das .git-Verzeichnis enthält alle Einstellungen, Logs, Branches, den HEAD und mehr.
-[Ausführliche Übersicht](http://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
+[Ausführliche Übersicht](https://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
 
 ### Arbeitsverzeichnis (Teil des Repositorys)
 
@@ -74,12 +74,6 @@ HEAD ist ein Pointer auf den aktuellen Branch. Ein Repository hat nur einen *akt
 
 Ein *head* ist ein Pointer, der auf einen beliebigen Commit zeigt.  Ein Repository kann eine beliebige Zahl von *heads* enthalten.
 
-### Konzeptionelle Hintergründe
-
-* [Git For Computer Scientists](http://eagain.net/articles/git-for-computer-scientists/)
-* [Git For Designers](http://hoth.entp.com/output/git_for_designers.html)
-
-
 ## Befehle
 
 
@@ -104,7 +98,7 @@ $ git config --global user.email "MyEmail@Zoho.com"
 $ git config --global user.name "My Name"
 ```
 
-[Mehr über git config](http://git-scm.com/docs/git-config)
+[Mehr über git config](https://git-scm.com/docs/git-config)
 
 ### help
 
@@ -255,7 +249,7 @@ $ git grep -e 'arrayListName' --and \( -e add -e remove \)
 ```
 
 Google ist dein Freund; für mehr Beispiele:
-[Git Grep Ninja](http://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
+[Git Grep Ninja](https://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
 
 ### log
 
@@ -338,7 +332,7 @@ Nimm alle Änderungen, die in einem Branch durch Commits vorgenommen wurden, und
 $ git rebase master experimentBranch
 ```
 
-[Weiterführende Informationen](http://git-scm.com/book/en/Git-Branching-Rebasing)
+[Weiterführende Informationen](https://git-scm.com/book/en/v2/Git-Branching-Rebasing)
 
 ### reset (mit Vorsicht einsetzen)
 
@@ -375,14 +369,12 @@ $ git rm /pather/to/the/file/HelloWorld.c
 
 ## Weiterführende Informationen
 
-* [tryGit - A fun interactive way to learn Git.](http://try.github.io/levels/1/challenges/1)
+* [git-scm - Video Tutorials](https://git-scm.com/videos)
 
-* [git-scm - Video Tutorials](http://git-scm.com/videos)
-
-* [git-scm - Documentation](http://git-scm.com/docs)
+* [git-scm - Documentation](https://git-scm.com/docs)
 
 * [Atlassian Git - Tutorials & Workflows](https://www.atlassian.com/git/)
 
-* [SalesForce Cheat Sheet](https://na1.salesforce.com/help/doc/en/salesforce_git_developer_cheatsheet.pdf)
+* [gitflow - Ein Modell um mit Branches zu arbeiten](https://nvie.com/posts/a-successful-git-branching-model/)
 
-* [gitflow - Ein Modell um mit Branches zu arbeiten](http://nvie.com/posts/a-successful-git-branching-model/)
+* [Git For Computer Scientists](https://eagain.net/articles/git-for-computer-scientists/)
diff --git a/es-es/git-es.html.markdown b/es-es/git-es.html.markdown
index 434d1341..f05735d3 100644
--- a/es-es/git-es.html.markdown
+++ b/es-es/git-es.html.markdown
@@ -31,7 +31,7 @@ uno o varios archivos, a lo largo del tiempo.
 + El versionamiento distribuido no tiene una estructura definida, incluso se
   puede mantener el estilo de los repositorios SVN con git.
 
-[Información adicional](http://git-scm.com/book/es/Empezando-Acerca-del-control-de-versiones)
+[Información adicional](https://git-scm.com/book/es/v2/Inicio---Sobre-el-Control-de-Versiones-Acerca-del-Control-de-Versiones)
 
 ### ¿Por qué usar Git?
 
@@ -58,7 +58,7 @@ Un repositorio esta compuesto por la carpeta .git y un "árbol de trabajo".
 El directorio .git contiene todas las configuraciones, registros, branches, HEAD
 y mas.
 
-[Lista detallada.](http://es.gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
+[Lista detallada.](https://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
 
 ### Directorio de trabajo (componentes del repositorio)
 
@@ -91,15 +91,8 @@ repositorio solo puede tener un HEAD activo. En cambio "head", es un apuntador a
 cualquier commit realizado, un repositorio puede tener cualquier número de
 "heads".
 
-### conceptos - recursos.
-
-* [Git para informáticos](http://eagain.net/articles/git-for-computer-scientists/)
-* [Git para diseñadores](http://hoth.entp.com/output/git_for_designers.html)
-
-
 ## Comandos.
 
-
 ### init
 
 Crear un repositorio de git vacio. Las configuraciones, información almacenada y
@@ -123,7 +116,7 @@ $ git config --global user.email "corre@gmail.com"
 $ git config --global user.name "nombre"
 ```
 
-[Más sobre git config.](http://git-scm.com/book/es/Personalizando-Git-Configuración-de-Git)
+[Más sobre git config.](https://git-scm.com/book/es/v2/Personalizaci%c3%b3n-de-Git-Configuraci%c3%b3n-de-Git)
 
 ### help
 
@@ -275,7 +268,7 @@ $ git grep -e 'nombreArreglo' --and \( -e agregar -e remover \)
 
 Más ejemplos:
 
-- [Git Grep Ninja](http://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
+- [Git Grep Ninja](https://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
 
 ### log
 
@@ -354,7 +347,7 @@ de otra rama. *No reescribe los commits que se han empujado antes a un repositor
 $ git rebase master experimentBranch
 ```
 
-[Información adicional.](http://git-scm.com/book/es/Ramificaciones-en-Git-Procedimientos-básicos-para-ramificar-y-fusionar)
+[Información adicional.](https://git-scm.com/book/es/v2/Ramificaciones-en-Git-Reorganizar-el-Trabajo-Realizado)
 
 ### reset (precaución)
 
@@ -396,22 +389,18 @@ $ git rm /directorio/del/archivo/FooBar.c
 
 ## Información Adicional
 
-* [tryGit - Una forma entretenida y rapida de aprender Git.](http://try.github.io/levels/1/challenges/1)
-
 * [Udemy tutorial de Git: Una guía completa](https://blog.udemy.com/git-tutorial-a-comprehensive-guide/)
 
-* [Inmersión Git - Una visita guiada caminando a través de los fundamentos de git](http://gitimmersion.com/)
+* [Inmersión Git - Una visita guiada caminando a través de los fundamentos de git](https://gitimmersion.com/)
 
-* [git-scm - Video-tutoriales](http://git-scm.com/videos)
-
-* [git-scm - Documentacion](http://git-scm.com/book/es)
+* [git-scm - Video-tutoriales](https://git-scm.com/videos)
 
 * [Atlassian Git - Tutoriales y Flujos de trabajo](https://www.atlassian.com/git/)
 
-* [SalesForce Chuleta](https://na1.salesforce.com/help/doc/en/salesforce_git_developer_cheatsheet.pdf)
+* [git - la guía sencilla](https://rogerdudler.github.io/git-guide/index.es.html)
 
-* [Git - La guía simple](http://rogerdudler.github.io/git-guide/index.html)
+* [Pro Git](https://git-scm.com/book/es/v2)
 
-* [Pro Git](http://www.git-scm.com/book/en/v2)
+* [Una introducción a Git y GitHub para principiantes (Tutorial)](https://product.hubspot.com/blog/git-and-github-tutorial-for-beginners)
 
-* [Una introducción a Git y GitHub para principiantes (Tutorial)](http://product.hubspot.com/blog/git-and-github-tutorial-for-beginners)
+* [Git para informáticos](https://eagain.net/articles/git-for-computer-scientists/)
diff --git a/fr-fr/git-fr.html.markdown b/fr-fr/git-fr.html.markdown
index f8623090..c6054e89 100644
--- a/fr-fr/git-fr.html.markdown
+++ b/fr-fr/git-fr.html.markdown
@@ -35,7 +35,7 @@ Chaque changement a un identifiant unique.
 * Les systèmes distribués n'ont pas de structure définie. Vous pouvez aisément
 avoir un système centralisé de type SVN, avec Git.
 
-[Informations additionnelles](http://git-scm.com/book/fr/v1/D%C3%A9marrage-rapide-%C3%80-propos-de-la-gestion-de-version)
+[Informations additionnelles](https://git-scm.com/book/fr/v2/D%C3%A9marrage-rapide-%C3%80-propos-de-la-gestion-de-version)
 
 ### Pourquoi utiliser Git ?
 
@@ -63,7 +63,7 @@ Un dépôt Git comprend un répertoire .git et "l'arbre de travail" (working tre
 
 Le répertoire .git contient toutes les configurations, logs (journaux),
 branches, HEAD et plus.
-[Liste détaillée (EN)](http://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
+[Liste détaillée (EN)](https://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
 
 ### Arbre de travail (composant du dépôt)
 
@@ -110,12 +110,6 @@ encore été rajouté à l'ensemble des fichiers Git
 * Validé ("committed") - Les fichiers ont été validés dans l'ensemble de
 fichiers
 
-### Ressources conceptuelles
-
-* [Git pour les informaticiens (EN)](http://eagain.net/articles/git-for-computer-scientists/)
-* [Git pour les designers (EN)](http://hoth.entp.com/output/git_for_designers.html)
-
-
 ## Commandes
 
 
@@ -141,7 +135,7 @@ $ git config --global user.email "monEmail@foo.com"
 $ git config --global user.name "Mon nom"
 ```
 
-[Apprenez-en plus à propos de git config.](https://git-scm.com/book/fr/v1/Personnalisation-de-Git-Configuration-de-Git)
+[Apprenez-en plus à propos de git config.](https://git-scm.com/book/fr/v2/Personnalisation-de-Git-Configuration-de-Git)
 
 ### help
 
@@ -355,7 +349,7 @@ $ git grep -e 'nomDeTableau' --and \( -e rajouter -e enlever \)
 ```
 
 Google est votre ami; pour plus d'exemples :
-[Git Grep Ninja](http://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
+[Git Grep Ninja](https://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
 
 ### log
 
@@ -507,7 +501,7 @@ $ git stash pop
 
 Vous êtes maintenant prêt à retourner sur vos tâches de travail !
 
-[Lecture additionelle.](https://git-scm.com/book/fr/v1/Utilitaires-Git-Le-remisage)
+[Lecture additionelle.](https://git-scm.com/book/fr/v2/Utilitaires-Git-Remisage-et-nettoyage)
 
 ### rebase (attention)
 
@@ -521,7 +515,7 @@ ré-applique sur une autre branche.
 $ git rebase master brancheExperience
 ```
 
-[Lecture additionelle.](https://git-scm.com/book/fr/v1/Les-branches-avec-Git-Rebaser)
+[Lecture additionelle.](https://git-scm.com/book/fr/v2/Les-branches-avec-Git-Rebaser-Rebasing)
 
 ### reset (attention)
 
@@ -564,20 +558,18 @@ $ git rm /chemin/vers/le/fichier/HelloWorld.c
 
 ## Informations complémentaires
 
-* [tryGit - A fun interactive way to learn Git (EN)](http://try.github.io/levels/1/challenges/1)
-
 * [Udemy Git Tutorial: A Comprehensive Guide (EN)](https://blog.udemy.com/git-tutorial-a-comprehensive-guide/)
 
-* [git-scm - Tutoriaux vidéos](http://git-scm.com/videos)
+* [git-scm - Tutoriaux vidéos](https://git-scm.com/videos)
 
-* [git-scm - Documentation](http://git-scm.com/docs)
+* [git-scm - Documentation](https://git-scm.com/docs)
 
 * [Atlassian Git - Tutoriaux et Workflows](https://www.atlassian.com/git/)
 
-* [SalesForce Cheat Sheet (EN)](https://na1.salesforce.com/help/doc/en/salesforce_git_developer_cheatsheet.pdf)
+* [git - petit guide](https://rogerdudler.github.io/git-guide/index.fr.html)
 
-* [Git - the simple guide (EN)](http://rogerdudler.github.io/git-guide/index.html)
+* [Livre Pro Git](https://git-scm.com/book/fr/v2)
 
-* [Livre Pro Git](http://www.git-scm.com/book/fr/v1)
+* [Une introduction à Git et GitHub pour les débutants (tutoriel) (EN)](https://product.hubspot.com/blog/git-and-github-tutorial-for-beginners)
 
-* [Une introduction à Git et GitHub pour les débutants (tutoriel) (EN)](http://product.hubspot.com/blog/git-and-github-tutorial-for-beginners)
+* [Git pour les informaticiens (EN)](https://eagain.net/articles/git-for-computer-scientists/)
diff --git a/git.html.markdown b/git.html.markdown
index dd227f8b..100d74ad 100644
--- a/git.html.markdown
+++ b/git.html.markdown
@@ -33,7 +33,7 @@ unique id.
 * Distributed systems have no defined structure. You could easily have a SVN
 style, centralized system, with git.
 
-[Additional Information](http://git-scm.com/book/en/Getting-Started-About-Version-Control)
+[Additional Information](https://git-scm.com/book/en/v2/Getting-Started-About-Version-Control)
 
 ### Why Use Git?
 
@@ -59,7 +59,7 @@ A git repository is comprised of the .git directory & working tree.
 
 The .git directory contains all the configurations, logs, branches, HEAD, and
 more.
-[Detailed List.](http://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
+[Detailed List.](https://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
 
 ### Working Tree (component of repository)
 
@@ -102,11 +102,6 @@ to Git Database yet
 * Staged - Marks a modified file to go into your next commit snapshot
 * Committed - Files have been committed to the Git Database
 
-### Conceptual Resources
-
-* [Git For Computer Scientists](http://eagain.net/articles/git-for-computer-scientists/)
-* [Git For Designers](http://hoth.entp.com/output/git_for_designers.html)
-
 ## Commands
 
 ### init
@@ -132,7 +127,7 @@ $ git config --global user.email
 $ git config --global user.name
 ```
 
-[Learn More About git config.](http://git-scm.com/docs/git-config)
+[Learn More About git config.](https://git-scm.com/docs/git-config)
 
 ### help
 
@@ -345,7 +340,7 @@ $ git grep -e 'arrayListName' --and \( -e add -e remove \)
 ```
 
 Google is your friend; for more examples
-[Git Grep Ninja](http://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
+[Git Grep Ninja](https://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
 
 ### log
 
@@ -495,7 +490,7 @@ $ git stash pop
 
 Now you're ready to get back to work on your stuff!
 
-[Additional Reading.](http://git-scm.com/book/en/v1/Git-Tools-Stashing)
+[Additional Reading.](https://git-scm.com/book/en/v2/Git-Tools-Stashing-and-Cleaning)
 
 ### rebase (caution)
 
@@ -509,7 +504,7 @@ another branch.
 $ git rebase master experimentBranch
 ```
 
-[Additional Reading.](http://git-scm.com/book/en/Git-Branching-Rebasing)
+[Additional Reading.](https://git-scm.com/book/en/v2/Git-Branching-Rebasing)
 
 ### reset (caution)
 
@@ -600,26 +595,26 @@ b88c6a1b (Google Python team  2019-12-30 13:45:23 -0800 14)
 
 ## Further Information
 
-* [tryGit - A fun interactive way to learn Git.](http://try.github.io/levels/1/challenges/1)
-
-* [Learn Git Branching - the most visual and interactive way to learn Git on the web](http://learngitbranching.js.org/)
+* [Learn Git Branching - the most visual and interactive way to learn Git on the web](https://learngitbranching.js.org/)
 
 * [Udemy Git Tutorial: A Comprehensive Guide](https://blog.udemy.com/git-tutorial-a-comprehensive-guide/)
 
-* [Git Immersion - A Guided tour that walks through the fundamentals of git](http://gitimmersion.com/)
+* [Git Immersion - A Guided tour that walks through the fundamentals of git](https://gitimmersion.com/)
 
-* [git-scm - Video Tutorials](http://git-scm.com/videos)
+* [git-scm - Video Tutorials](https://git-scm.com/videos)
 
-* [git-scm - Documentation](http://git-scm.com/docs)
+* [git-scm - Documentation](https://git-scm.com/docs)
 
 * [Atlassian Git - Tutorials & Workflows](https://www.atlassian.com/git/)
 
-* [SalesForce Cheat Sheet](http://res.cloudinary.com/hy4kyit2a/image/upload/SF_git_cheatsheet.pdf)
+* [SalesForce Cheat Sheet](https://res.cloudinary.com/hy4kyit2a/image/upload/SF_git_cheatsheet.pdf)
 
-* [Git - the simple guide](http://rogerdudler.github.io/git-guide/index.html)
+* [git - the simple guide](https://rogerdudler.github.io/git-guide/index.html)
 
-* [Pro Git](http://www.git-scm.com/book/en/v2)
+* [Pro Git](https://git-scm.com/book/en/v2)
 
-* [An introduction to Git and GitHub for Beginners (Tutorial)](http://product.hubspot.com/blog/git-and-github-tutorial-for-beginners)
+* [An introduction to Git and GitHub for Beginners (Tutorial)](https://product.hubspot.com/blog/git-and-github-tutorial-for-beginners)
 
 * [The New Boston tutorial to Git covering basic commands and workflow](https://www.youtube.com/playlist?list=PL6gx4Cwl9DGAKWClAD_iKpNC0bGHxGhcx)
+
+* [Git For Computer Scientists](https://eagain.net/articles/git-for-computer-scientists/)
diff --git a/it-it/git-it.html.markdown b/it-it/git-it.html.markdown
index d2154d2c..afd10f36 100644
--- a/it-it/git-it.html.markdown
+++ b/it-it/git-it.html.markdown
@@ -36,7 +36,7 @@ registra le modifiche apportate a uno o più file nel tempo.
 * I sistemi distribuiti non hanno una struttura definita. Si potrebbe creare
   ad esempio un sistema centralizzato simile a SVN utilizzando Git.
 
-[Ulteriori informazioni](http://git-scm.com/book/it/v1/Per-Iniziare-Il-Controllo-di-Versione)
+[Ulteriori informazioni](https://git-scm.com/book/it/v2/Per-Iniziare-Il-Controllo-di-Versione)
 
 ### Perchè usare Git?
 
@@ -60,7 +60,7 @@ Un repository comprende la cartella .git e il working tree.
 ### Cartella .git (componente del repository)
 
 La cartella .git contiene tutte le configurazioni, i log, i rami e altro.
-[Lista dettagliata](http://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
+[Lista dettagliata](https://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
 
 ### Working Tree (componente del repository)
 
@@ -128,7 +128,7 @@ $ git config --global user.email "email@example.com"
 $ git config --global user.name "Nome utente"
 ```
 
-[Ulteriori informazioni su git config](http://git-scm.com/docs/git-config)
+[Ulteriori informazioni su git config](https://git-scm.com/docs/git-config)
 
 ### help
 
@@ -456,7 +456,7 @@ Applica le modifiche effettuate su un branch su un altro branch.
 $ git rebase master experimentBranch
 ```
 
-[Ulteriori informazioni](https://git-scm.com/book/it/v1/Diramazioni-in-Git-Rifondazione)
+[Ulteriori informazioni](https://git-scm.com/book/it/v2/Git-Branching-Rebasing)
 
 ### reset (attenzione)
 
diff --git a/pt-br/git-pt.html.markdown b/pt-br/git-pt.html.markdown
index 363274d7..ce9b7f63 100644
--- a/pt-br/git-pt.html.markdown
+++ b/pt-br/git-pt.html.markdown
@@ -36,7 +36,7 @@ alteração é associada a um *id* único.
 * Sistemas distribuídos não têm estrutura definida. É possivel ter um sistema
 centralizado ao estilo SVN usando git.
 
-[Informação adicional (EN)](http://git-scm.com/book/en/Getting-Started-About-Version-Control)
+[Informação adicional (EN)](https://git-scm.com/book/en/v2/Getting-Started-About-Version-Control)
 
 ### Por que usar git?
 
@@ -64,7 +64,7 @@ Um repositório git é constituído pelo diretório .git e a *working tree*
 O repositório .git contém todas as configurações, *logs*, *branches*,
 referências e outros.
 
-[Lista detalhada (EN)](http://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
+[Lista detalhada (EN)](https://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
 
 ### *Working Tree* (componente do repositório)
 
@@ -111,11 +111,6 @@ próximo commit
 * Consolidado (Committed): As mudanças foram registradas na base de dados do
 Git
 
-### Recursos conceituais (EN)
-
-* [Git para Cientistas de Computação](http://eagain.net/articles/git-for-computer-scientists/)
-* [Git para Designers](http://hoth.entp.com/output/git_for_designers.html)
-
 ## Comandos
 
 ### *init*
@@ -141,7 +136,7 @@ $ git config --global user.email
 $ git config --global user.name
 ```
 
-[Aprenda mais sobre git config. (EN)](http://git-scm.com/docs/git-config)
+[Aprenda mais sobre git config. (EN)](https://git-scm.com/docs/git-config)
 
 ### help
 
@@ -363,7 +358,7 @@ $ git grep -e 'arrayListName' --and \( -e add -e remove \)
 ```
 
 O Google é seu amigo; para mais exemplos:
-[Git Grep Ninja (EN)](http://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
+[Git Grep Ninja (EN)](https://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
 
 ### log
 
@@ -520,7 +515,7 @@ $ git stash pop
 
 Agora podemos voltar a trabalhar no que havíamos deixado de lado!
 
-[Additional Reading.](http://git-scm.com/book/en/v1/Git-Tools-Stashing)
+[Additional Reading.](https://git-scm.com/book/en/v2/Git-Tools-Stashing-and-Cleaning)
 
 ### rebase (cautela!)
 
@@ -535,7 +530,7 @@ público*
 $ git rebase master experimentBranch
 ```
 
-[Leitura adicional (EN).](http://git-scm.com/book/en/Git-Branching-Rebasing)
+[Leitura adicional (EN).](https://git-scm.com/book/en/v2/Git-Branching-Rebasing)
 
 ### reset (cuidado!)
 
@@ -619,26 +614,26 @@ $ git rm /caminho/para/o/arquivo/OlaMundo.c
 
 ## Leitura complementar
 
-* [Configurar o Git (GitHub Docs)](https://docs.github.com/pt/get-started/quickstart/set-up-git)
+* [Configurar o Git (GitHub Docs)](https://docs.github.com/pt/get-started/getting-started-with-git/set-up-git)
 
-* [Learn Git Branching - the most visual and interactive way to learn Git on the web](http://learngitbranching.js.org/)
+* [Learn Git Branching - the most visual and interactive way to learn Git on the web](https://learngitbranching.js.org/)
 
 * [Udemy Git Tutorial: A Comprehensive Guide](https://blog.udemy.com/git-tutorial-a-comprehensive-guide/)
 
-* [Git Immersion - A Guided tour that walks through the fundamentals of git](http://gitimmersion.com/)
+* [Git Immersion - A Guided tour that walks through the fundamentals of git](https://gitimmersion.com/)
 
-* [git-scm - Video Tutorials](http://git-scm.com/videos)
+* [git-scm - Video Tutorials](https://git-scm.com/videos)
 
-* [git-scm - Documentation](http://git-scm.com/docs)
+* [git-scm - Documentation](https://git-scm.com/docs)
 
 * [Atlassian Git - Tutorials & Workflows](https://www.atlassian.com/git/)
 
-* [SalesForce Cheat Sheet](https://na1.salesforce.com/help/doc/en/salesforce_git_developer_cheatsheet.pdf)
+* [git - guia prático](https://rogerdudler.github.io/git-guide/index.pt_BR.html)
 
-* [Git - the simple guide](http://rogerdudler.github.io/git-guide/index.html)
+* [Pro Git (em Português)](https://git-scm.com/book/pt-br/v2)
 
-* [Pro Git (em Português)](https://www.git-scm.com/book/pt-br/v2)
-
-* [An introduction to Git and GitHub for Beginners (Tutorial)](http://product.hubspot.com/blog/git-and-github-tutorial-for-beginners)
+* [An introduction to Git and GitHub for Beginners (Tutorial)](https://product.hubspot.com/blog/git-and-github-tutorial-for-beginners)
 
 * [The New Boston tutorial to Git covering basic commands and workflow](https://www.youtube.com/playlist?list=PL6gx4Cwl9DGAKWClAD_iKpNC0bGHxGhcx)
+
+* [Git para Cientistas de Computação](https://eagain.net/articles/git-for-computer-scientists/)
diff --git a/pt-pt/git-pt.html.markdown b/pt-pt/git-pt.html.markdown
index aacf81a4..aa42fa29 100644
--- a/pt-pt/git-pt.html.markdown
+++ b/pt-pt/git-pt.html.markdown
@@ -31,7 +31,7 @@ alteração é associada a um *id* único.
 * Sistemas distribuidos não têm estrutura definida. É possivel ter um sistema
 centralizado ao estilo SVN usando git.
 
-[Informação adicional (EN)](http://git-scm.com/book/en/Getting-Started-About-Version-Control)
+[Informação adicional (EN)](https://git-scm.com/book/en/v2/Getting-Started-About-Version-Control)
 
 ### Porquê usar git?
 
@@ -59,7 +59,7 @@ Um repositório git é constituido pelo directório .git e a *working tree*
 O repositório .git contém todas as configurações, *logs*, *branches*,
 referências e outros.
 
-[Lista detalhada (EN)](http://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
+[Lista detalhada (EN)](https://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
 
 ### *Working Tree* (componente do repositório)
 
@@ -92,11 +92,6 @@ uma *HEAD* activa.
 *head* é uma referência que aponta para qualquer *commit*. Um repositório pode
 ter um número indefinido de *heads*
 
-### Recursos conceptuais (EN)
-
-* [Git para Cientistas de Computação](http://eagain.net/articles/git-for-computer-scientists/)
-* [Git para Designers](http://hoth.entp.com/output/git_for_designers.html)
-
 ## Comandos
 
 ### *init*
@@ -122,7 +117,7 @@ $ git config --global user.email "MyEmail@Zoho.com"
 $ git config --global user.name "My Name"
 ```
 
-[Aprenda mais sobre git config. (EN)](http://git-scm.com/docs/git-config)
+[Aprenda mais sobre git config. (EN)](https://git-scm.com/docs/git-config)
 
 ### help
 
@@ -274,7 +269,7 @@ $ git grep -e 'arrayListName' --and \( -e add -e remove \)
 ```
 
 Google é teu amigo; para mais exemplos:
-[Git Grep Ninja (EN)](http://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
+[Git Grep Ninja (EN)](https://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
 
 ### log
 
@@ -361,7 +356,7 @@ público*
 $ git rebase master experimentBranch
 ```
 
-[Additional Reading (EN).](http://git-scm.com/book/en/Git-Branching-Rebasing)
+[Additional Reading (EN).](https://git-scm.com/book/en/v2/Git-Branching-Rebasing)
 
 ### reset (cautela!)
 
@@ -402,12 +397,10 @@ $ git rm /pather/to/the/file/HelloWorld.c
 
 ## Informação complementar (EN)
 
-* [tryGit - A fun interactive way to learn Git.](http://try.github.io/levels/1/challenges/1)
+* [git-scm - Video Tutorials](https://git-scm.com/videos)
 
-* [git-scm - Video Tutorials](http://git-scm.com/videos)
-
-* [git-scm - Documentation](http://git-scm.com/docs)
+* [git-scm - Documentation](https://git-scm.com/docs)
 
 * [Atlassian Git - Tutorials & Workflows](https://www.atlassian.com/git/)
 
-* [SalesForce Cheat Sheet](https://na1.salesforce.com/help/doc/en/salesforce_git_developer_cheatsheet.pdf)
+* [Git para Cientistas de Computação](https://eagain.net/articles/git-for-computer-scientists/)
diff --git a/sk-sk/git-sk.html.markdown b/sk-sk/git-sk.html.markdown
index 78761bbb..e6d6b0d7 100644
--- a/sk-sk/git-sk.html.markdown
+++ b/sk-sk/git-sk.html.markdown
@@ -29,7 +29,7 @@ Riadenie revízií je systém, ktorý postupom času zaznamenáva zmeny súboru
 * Distribuované riadenie revízií sa zameriava na zdieľanie zmien. Kaťdá zmena má jedinečný identifikátor (id).
 * Distribuované systémy nemajú definovanú štruktúru. S gitom môžeš mať centralizovaný systém v subversion (SVN) štýle.
 
-[Ďalšie informácie](http://git-scm.com/book/en/Getting-Started-About-Version-Control)
+[Ďalšie informácie](https://git-scm.com/book/en/v2/Getting-Started-About-Version-Control)
 
 ### Prečo Používať Git? 
 
@@ -52,7 +52,7 @@ Git repozitár sa skladá z .git adresára a pracovného stromu
 ### .git Adresár (časť repozitára)
 
 .git  adresár obsahuje všetky konfigurácie, logy, vetvy, odkaz na aktuálnu vetvu (HEAD) a ostatné.
-[Detailný zoznam.](http://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
+[Detailný zoznam.](https://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
 
 ### Pracovný Strom (Working Tree - časť repozitára)
 
@@ -84,12 +84,6 @@ head je ukazateľ, ktorý môže ukazovať na akýkoľvek commit. Repozitár mô
 * Staged - Zmenený súbor, ktorý pôjde do najbližšieho commit snímku.
 * Committed - Súbory boli commitnuté do Git Databázy.
 
-### Koncepčné zdroje
-
-* [Git Pre Informatikov](http://eagain.net/articles/git-for-computer-scientists/)
-* [Git Pre Designerov](http://hoth.entp.com/output/git_for_designers.html)
-
-
 ## Príkazy
 
 
@@ -112,7 +106,7 @@ $ git config --global user.email "MôjEmail@Zoho.com"
 $ git config --global user.name  "Moje Meno	"
 ```
 
-[Prečítaj si viac o git configu.](http://git-scm.com/docs/git-config)
+[Prečítaj si viac o git configu.](https://git-scm.com/docs/git-config)
 
 ### pomoc
 
@@ -302,7 +296,7 @@ $ git grep -e 'arrayListName' --and \( -e add -e remove \)
 ```
 
 Google je tvoj kamarát; pre viac príkladov skoč na
-[Git Grep Ninja](http://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
+[Git Grep Ninja](https://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
 
 ### log
 
@@ -444,7 +438,7 @@ $ git stash pop
 
 Hotovo, môžeš pokračovať v práci!
 
-[Čítaj viac.](http://git-scm.com/book/en/v1/Git-Tools-Stashing)
+[Čítaj viac.](https://git-scm.com/book/en/v2/Git-Tools-Stashing-and-Cleaning)
 
 ### rebase (pozor)
 
@@ -457,7 +451,7 @@ Zober všetky zmeny commitnuté do vetvy a aplikuj ich na inú vetvu.
 $ git rebase master experimentBranch
 ```
 
-[Čítaj viac.](http://git-scm.com/book/en/Git-Branching-Rebasing)
+[Čítaj viac.](https://git-scm.com/book/en/v2/Git-Branching-Rebasing)
 
 ### reset (pozor)
 
@@ -503,22 +497,20 @@ $ git rm /pather/to/the/file/HelloWorld.c
 
 ## Ďalšie informácie
 
-* [tryGit - Zábavný interaktívny spôsob, ako sa naučiť Git.](http://try.github.io/levels/1/challenges/1)
-
 * [Udemy Git Tutoriál: Kompletný návod](https://blog.udemy.com/git-tutorial-a-comprehensive-guide/)
 
-* [Git Immersion - Návod, ktorý Ťa prevedie základmi Gitu](http://gitimmersion.com/)
+* [Git Immersion - Návod, ktorý Ťa prevedie základmi Gitu](https://gitimmersion.com/)
 
-* [git-scm - Video Tutoriály](http://git-scm.com/videos)
+* [git-scm - Video Tutoriály](https://git-scm.com/videos)
 
-* [git-scm - Dokumentácia](http://git-scm.com/docs)
+* [git-scm - Dokumentácia](https://git-scm.com/docs)
 
 * [Atlassian Git - Tutoriály & Postupy](https://www.atlassian.com/git/)
 
-* [SalesForce Cheat Sheet](https://na1.salesforce.com/help/doc/en/salesforce_git_developer_cheatsheet.pdf)
+* [Git - jednoducho](https://rogerdudler.github.io/git-guide/index.html)
 
-* [Git - jednoducho](http://rogerdudler.github.io/git-guide/index.html)
+* [Pro Git](https://git-scm.com/book/en/v2)
 
-* [Pro Git](http://www.git-scm.com/book/en/v2)
+* [Úvod do Gitu a GitHubu pre začiatočníkov (Tutoriál)](https://product.hubspot.com/blog/git-and-github-tutorial-for-beginners)
 
-* [Úvod do Gitu a GitHubu pre začiatočníkov (Tutoriál)](http://product.hubspot.com/blog/git-and-github-tutorial-for-beginners)
+* [Git Pre Informatikov](https://eagain.net/articles/git-for-computer-scientists/)
diff --git a/tr-tr/git-tr.html.markdown b/tr-tr/git-tr.html.markdown
index 2778b7a5..126de213 100644
--- a/tr-tr/git-tr.html.markdown
+++ b/tr-tr/git-tr.html.markdown
@@ -32,7 +32,7 @@ Versiyon kontrol, zaman içerisinde dosya(lar)daki değişikliği kaydeden siste
 * Dağınık versiyon kontrolü değişimin paylaşılmasına odaklanır. Her değişiminin benzersiz bir adı vardır.
 * Dağınık sistemlerin belirlenmiş bir yapısı yoktur. Git ile kolayca SVN'deki gibi merkezi bir sistem elde edebilirsin. 
 
-[Daha fazla bilgi](http://git-scm.com/book/en/Getting-Started-About-Version-Control)
+[Daha fazla bilgi](https://git-scm.com/book/en/v2/Getting-Started-About-Version-Control)
 
 ### Neden Git?
 
@@ -56,7 +56,7 @@ Bir git repo'su .git dizini ve çalışma ağacından oluşur.
 ### .git Dizini (repository bileşeni)
 
 .git dizini bütün konfigrasyon, log, dallanma, HEAD ve daha fazlasını tutar.
-[detaylı liste](http://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
+[detaylı liste](https://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
 
 ### Çalışma Ağacı (repository bileşeni)
 
@@ -95,11 +95,6 @@ head, commit'e bir göstericidir. Bir repository herhangi bir sayıda head'e sah
 * Staged - Modified edilmiş bir dosyayı, sonraki commit'e gitmek üzere işaretler.
 * Committed - Dosyalar Git Veritabanına commit'lendi.  
 
-### Kavramsal Kaynaklar 
-
-* [Bilgisayar Bilimciler için Git](http://eagain.net/articles/git-for-computer-scientists/)
-* [Tasarımcılar için Git](http://hoth.entp.com/output/git_for_designers.html)
-
 ## Komutlar
 
 ### init
@@ -122,7 +117,7 @@ $ git config --global user.email "MyEmail@Zoho.com"
 $ git config --global user.name "My Name"
 ```
 
-[git config hakkında daha fazla bilgi için.](http://git-scm.com/docs/git-config)
+[git config hakkında daha fazla bilgi için.](https://git-scm.com/docs/git-config)
 
 ### help
 
@@ -332,7 +327,7 @@ $ git grep -e 'arrayListName' --and \( -e add -e remove \)
 ```
 
 Daha fazla örnek için
-[Git Grep Ninja](http://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
+[Git Grep Ninja](https://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
 
 ### log
 
@@ -483,7 +478,7 @@ $ git stash pop
 
 Şimdi kendi işine dönmeye hazırsın!
 
-[Ek Okuma.](http://git-scm.com/book/en/v1/Git-Tools-Stashing)
+[Ek Okuma.](https://git-scm.com/book/en/v2/Git-Tools-Stashing-and-Cleaning)
 
 ### rebase (dikkat)
 
@@ -496,7 +491,7 @@ Branch'ta commit'lenen tüm değişimleri al ve onları başka bir branch'ta tek
 $ git rebase master experimentBranch
 ```
 
-[Ek Okuma.](http://git-scm.com/book/en/Git-Branching-Rebasing)
+[Ek Okuma.](https://git-scm.com/book/en/v2/Git-Branching-Rebasing)
 
 ### reset (dikkat)
 
@@ -576,24 +571,24 @@ $ git rm /pather/to/the/file/HelloWorld.c
 
 ## Daha Fazla Bilgi
 
-* [tryGit - Git'i öğrenmek için eğlenceli interaktif bir yol](http://try.github.io/levels/1/challenges/1)
-
-* [Git Dallanmayı Öğren -  Git'i web üzerinde öğrenmek için en görsel ve interaktif yol](http://learngitbranching.js.org/)
+* [Git Dallanmayı Öğren -  Git'i web üzerinde öğrenmek için en görsel ve interaktif yol](https://learngitbranching.js.org/)
 
 * [Udemy Git Tutorial: Kapsayıcı bir kılavuz](https://blog.udemy.com/git-tutorial-a-comprehensive-guide/)
 
-* [Git Immersion - Git'in temelinden başlayan bir tur](http://gitimmersion.com/)
+* [Git Immersion - Git'in temelinden başlayan bir tur](https://gitimmersion.com/)
 
-* [git-scm - Video Tutorial](http://git-scm.com/videos)
+* [git-scm - Video Tutorial](https://git-scm.com/videos)
 
-* [git-scm - Dökümantasyon](http://git-scm.com/docs)
+* [git-scm - Dökümantasyon](https://git-scm.com/docs)
 
 * [Atlassian Git - Tutorial & Workflow](https://www.atlassian.com/git/)
 
-* [SalesForce Kopya Kağıdı](http://res.cloudinary.com/hy4kyit2a/image/upload/SF_git_cheatsheet.pdf)
+* [SalesForce Kopya Kağıdı](https://res.cloudinary.com/hy4kyit2a/image/upload/SF_git_cheatsheet.pdf)
 
-* [Git - Basit bir kılavuz](http://rogerdudler.github.io/git-guide/index.html)
+* [git - basit rehber](https://rogerdudler.github.io/git-guide/index.tr.html)
 
-* [Pro Git](http://www.git-scm.com/book/en/v2)
+* [Pro Git](https://git-scm.com/book/tr/v2)
 
-* [Yeni başlayanlar için Git ve GitHub](http://product.hubspot.com/blog/git-and-github-tutorial-for-beginners)
+* [Yeni başlayanlar için Git ve GitHub](https://product.hubspot.com/blog/git-and-github-tutorial-for-beginners)
+
+* [Bilgisayar Bilimciler için Git](https://eagain.net/articles/git-for-computer-scientists/)
diff --git a/vi-vn/git-vi.html.markdown b/vi-vn/git-vi.html.markdown
index 60881089..fca5617a 100644
--- a/vi-vn/git-vi.html.markdown
+++ b/vi-vn/git-vi.html.markdown
@@ -26,7 +26,7 @@ Version Control là một hệ thống ghi lại những thay đổi ở một t
 * Quản lý phiên bản phân tán (Distributed Versioning) tập trung vào việc chia sẻ các thay đổi. Mỗi sự thay đổi có một mã định dạng (id) duy nhất.
 * Các hệ phân tán không có cấu trúc định sẵn. Bạn có thể thay đổi một kiểu SVN, hệ phân tán, với git.
 
-[Thông tin thêm](http://git-scm.com/book/en/Getting-Started-About-Version-Control)
+[Thông tin thêm](https://git-scm.com/book/en/v2/Getting-Started-About-Version-Control)
 
 ### Tại Sao Dùng Git?
 
@@ -50,7 +50,7 @@ Một git repository bao gồm thư mục .git & tree đang làm việc.
 ### Thư mục .git (thành phần của một repository)
 
 Thư mục .git chứa tất cả các cấu hình, log, nhánh, HEAD, và hơn nữa.
-[Danh Sách Chi Tiết.](http://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
+[Danh Sách Chi Tiết.](https://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
 
 ### Tree Đang Làm (thành phần của một repository)
 
@@ -79,12 +79,6 @@ con trỏ này sẽ cập nhật tự động và trỏ đến commit mới nh
 HEAD là một con trỏ đến branch hiện tại. Một repo chỉ có một HEAD *đang hoạt động*.
 head là một con trỏ đến bất kỳ commit nào. Một repo có thể có nhiều head.
 
-### Các Tài Nguyên Mang Tính Khái Niệm
-
-* [Git For Computer Scientists](http://eagain.net/articles/git-for-computer-scientists/)
-* [Git For Designers](http://hoth.entp.com/output/git_for_designers.html)
-
-
 ## Các Lệnh
 
 
@@ -113,7 +107,7 @@ $ git config --global user.email "MyEmail@Zoho.com"
 $ git config --global user.name "My Name"
 ```
 
-[Tìm hiểu thêm về git config.](http://git-scm.com/docs/git-config)
+[Tìm hiểu thêm về git config.](https://git-scm.com/docs/git-config)
 
 ### help
 
@@ -258,7 +252,7 @@ $ git grep -e 'arrayListName' --and \( -e add -e remove \)
 ```
 
 Google để xem thêm các ví dụ
-[Git Grep Ninja](http://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
+[Git Grep Ninja](https://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
 
 ### log
 
@@ -347,7 +341,7 @@ Lấy tất cả các thay đổi mà đã được commit trên một nhánh, v
 $ git rebase master experimentBranch
 ```
 
-[Đọc Thêm.](http://git-scm.com/book/en/Git-Branching-Rebasing)
+[Đọc Thêm.](https://git-scm.com/book/en/v2/Git-Branching-Rebasing)
 
 ### reset (thận trọng)
 
@@ -386,16 +380,12 @@ $ git rm /pather/to/the/file/HelloWorld.c
 
 ## Thông tin thêm
 
-* [tryGit - A fun interactive way to learn Git.](http://try.github.io/levels/1/challenges/1)
+* [git-scm - Video Tutorials](https://git-scm.com/videos)
 
-* [git-scm - Video Tutorials](http://git-scm.com/videos)
-
-* [git-scm - Documentation](http://git-scm.com/docs)
+* [git-scm - Documentation](https://git-scm.com/docs)
 
 * [Atlassian Git - Tutorials & Workflows](https://www.atlassian.com/git/)
 
-* [SalesForce Cheat Sheet](https://na1.salesforce.com/help/doc/en/salesforce_git_developer_cheatsheet.pdf)
-
-* [Git - the simple guide](http://rogerdudler.github.io/git-guide/index.html)
-
+* [Git - the simple guide](https://rogerdudler.github.io/git-guide/index.html)
 
+* [Git For Computer Scientists](https://eagain.net/articles/git-for-computer-scientists/)
diff --git a/zh-cn/git-cn.html.markdown b/zh-cn/git-cn.html.markdown
index 6a9f7282..cf70a154 100644
--- a/zh-cn/git-cn.html.markdown
+++ b/zh-cn/git-cn.html.markdown
@@ -24,7 +24,7 @@ Git可以为你的项目保存若干快照，以此来对整个项目进行版
 * 分布式版本控制则更注重共享更改。每一次更改都有唯一的标识
 * 分布式系统没有预定的结构。你也可以用git很轻松的实现SVN风格的集中式系统控制
 
-[更多信息](http://git-scm.com/book/en/Getting-Started-About-Version-Control)
+[更多信息](https://git-scm.com/book/en/v2/Getting-Started-About-Version-Control)
 
 ### 为什么要使用Git
 
@@ -47,7 +47,7 @@ Git可以为你的项目保存若干快照，以此来对整个项目进行版
 ### .git 目录(版本库的一部分)
 
 .git 目录包含所有的配置、日志、分支信息、头指针等
-[详细列表](http://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
+[详细列表](https://gitready.com/advanced/2009/03/23/whats-inside-your-git-directory.html)
 
 ### 工作目录 (版本库的一部分)
 
@@ -74,12 +74,6 @@ Git可以为你的项目保存若干快照，以此来对整个项目进行版
 头指针是一个指向当前分支的指针，一个版本库只有一个当前活动的头指针
 而头则可以指向版本库中任意一个提交，每个版本库也可以有多个头
 
-### 其他形象化解释
-
-* [给计算机科学家的解释](http://eagain.net/articles/git-for-computer-scientists/)
-* [给设计师的解释](http://hoth.entp.com/output/git_for_designers.html)
-
-
 ## 命令
 
 
@@ -105,7 +99,7 @@ $ git config --global user.email "MyEmail@Zoho.com"
 $ git config --global user.name "My Name"
 ```
 
-[关于git的更多设置](http://git-scm.com/docs/git-config)
+[关于git的更多设置](https://git-scm.com/docs/git-config)
 
 ### 帮助
 
@@ -247,7 +241,7 @@ $ git grep -e 'arrayListName' --and \( -e add -e remove \)
 ```
 
 更多的例子可以查看：
-[Git Grep Ninja](http://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
+[Git Grep Ninja](https://travisjeffery.com/b/2012/02/search-a-git-repo-like-a-ninja)
 
 ### log
 
@@ -324,7 +318,7 @@ $ git push origin master
 $ git rebase master experimentBranch
 ```
 
-[更多阅读](http://git-scm.com/book/en/Git-Branching-Rebasing)
+[更多阅读](https://git-scm.com/book/en/v2/Git-Branching-Rebasing)
 
 ### reset (谨慎使用)
 
@@ -361,12 +355,10 @@ $ git rm /pather/to/the/file/HelloWorld.c
 
 ## 更多阅读
 
-* [tryGit - 学习Git的有趣方式](http://try.github.io/levels/1/challenges/1)
+* [git-scm - 视频教程](https://git-scm.com/videos)
 
-* [git-scm - 视频教程](http://git-scm.com/videos)
-
-* [git-scm - 文档](http://git-scm.com/docs)
+* [git-scm - 文档](https://git-scm.com/docs)
 
 * [Atlassian Git - 教程与工作流程](https://www.atlassian.com/git/)
 
-* [SalesForce Cheat Sheet](https://na1.salesforce.com/help/doc/en/salesforce_git_developer_cheatsheet.pdf)
+* [给计算机科学家的解释](https://eagain.net/articles/git-for-computer-scientists/)