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🎓 Path to a free self-taught education in Computer Science!
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README.md

Open Source Society University (OSSU)

Open Source Society University

Path to a self-taught education in Computer Science!

Awesome Open Source Society University - Computer Science

Contents

Summary

The OSSU curriculum is a complete education in computer science using online materials. It's not merely for career training or professional development. It's for those who want a proper, well-rounded grounding in concepts fundamental to all computing disciplines, and for those who have the discipline, will, and (most importantly!) good habits to obtain this education largely on their own, but with support from a worldwide community of fellow learners.

It is designed according to the degree requirements of undergraduate computer science majors, minus general education (non-CS) requirements, as it is assumed most of the people following this curriculum are already educated outside the field of CS. The courses themselves are among the very best in the world, often coming from Harvard, Princeton, MIT, etc., but specifically chosen to meet the following criteria.

Courses must:

  • Be open for enrollment
  • Run regularly (ideally in self-paced format, otherwise running at least once a month or so)
  • Fulfill the academic requirements of OSSU
  • Fit neatly into the progression of the curriculum with respect to topics and difficulty level
  • Be of generally high quality in teaching materials and pedagogical principles

When no course meets the above criteria, the coursework is supplemented with a book. When there are courses or books that don't fit into the curriculum but are otherwise of high quality, they belong in extras/courses or extras/readings.

Organization. The curriculum is designed as follows:

  • Intro CS: for students to try out CS and see if it's right for them
  • Core CS: corresponds roughly to the first three years of a computer science curriculum, taking classes that all majors would be required to take
  • Advanced CS: corresponds roughly to the final year of a computer science curriculum, taking electives according to the student's interests
  • Final Project: a project for students to validate, consolidate, and display their knowledge, to be evaluated by their peers worldwide
  • Pro CS: graduate-level specializations students can elect to take after completing the above curriculum if they want to maximize their chances of getting a good job

Duration. It is possible to finish Core CS within about 2 years if you plan carefully and devote roughly 18-22 hours/week to your studies. Courses in Core CS should be taken linearly if possible, but since a perfectly linear progression is rarely possible, each class's prerequisites is specified so that you can design a logical but non-linear progression based on the class schedules and your own life plans.

Cost. All or nearly all course material prior to Pro CS is available for free, however some courses may charge money for assignments/tests/projects to be graded. Note that Coursera offers financial aid. Decide how much or how little to spend based on your own time and budget; just remember that you can't purchase success!

Content policy. If you plan on showing off some of your coursework publicly, you must share only files that you are allowed to. Do NOT disrespect the code of conduct that you signed in the beginning of each course!

How to contribute. Please see CONTRIBUTING.

Curriculum

Curriculum version: 7.0.1 (see CHANGELOG)

Prerequisites

  • Core CS assumes the student has already taken high school math and physics, including algebra, geometry, and pre-calculus. Some high school graduates will have already taken AP Calculus, but this is usually only about 3/4 of a college calculus class, so the calculus courses in the curriculum are still recommended.
  • Advanced CS assumes the student has already taken the entirety of Core CS and is knowledgeable enough now to decide which electives to take.
  • Note that Advanced systems assumes the student has taken a basic physics course (e.g. AP Physics in high school).

Intro CS

Use the first course, CS50, to determine if Computer Science is right for you. Only proceed in the curriculum if it really excites you!

Topics covered: imperative programming; procedural programming; C; manual memory management; basic data structures and algorithms; basic Python; SQL; basic HTML, CSS, JavaScript; and more.

Courses Duration Effort Prerequisites
Introduction to Computer Science - CS50 (alt) 12 weeks 10-20 hours/week none

Core CS

All coursework under Core CS is required, unless otherwise indicated.

Core programming

Topics covered: functional programming; design for testing; program requirements; common design patterns; unit testing; object-oriented design; Java; static typing; dynamic typing; ML-family languages (via Standard ML); Lisp-family languages (via Racket); Ruby; and more.

Courses Duration Effort Prerequisites
How to Code - Simple Data 7 weeks 8-10 hours/week none
How to Code - Complex Data 6 weeks 8-10 hours/week How to Code: Simple Data
Software Construction - Data Abstraction 6 weeks 8-10 hours/week How to Code - Complex Data
Software Construction - Object-Oriented Design 6 weeks 8-10 hours/week Software Construction - Data Abstraction
Programming Languages (A, B, C) 10 weeks 8-16 hours/week recommended: C and Java

Readings

Core math

Topics covered: linear transformations; matrices; vectors; mathematical proofs; number theory; differential calculus; integral calculus; sequences and series; discrete mathematics; basic statistics; O-notation; graph theory; vector calculus; discrete probability; and more.

Courses Duration Effort Prerequisites
Linear Algebra - Foundations to Frontiers (alt) 15 weeks 8 hours/week pre-calculus
Calculus One1 (alt) 16 weeks 8-10 hours/week pre-calculus
Calculus Two: Sequences and Series 7 weeks 9-10 hours/week Calculus One
Mathematics for Computer Science 13 weeks 5 hours/week single variable calculus (Calculus Two)

1 Note: When you are enrolled, please see this list of errors and these recommendations for how to progress through the course.

Core systems

Topics covered: boolean algebra; gate logic; memory; machine language; computer architecture; assembly; machine language; virtual machines; high-level languages; compilers; operating systems; network protocols; and more.

Courses Duration Effort Prerequisites
Build a Modern Computer from First Principles: From Nand to Tetris (alt) 6 weeks 7-13 hours/week none
Build a Modern Computer from First Principles: Nand to Tetris Part II 6 weeks 12-18 hours/week From Nand to Tetris Part I
Introduction to Computer Networking - 4–12 hours/week algebra, probability, basic CS

Readings

Core theory

Topics covered: divide and conquer; sorting and searching; randomized algorithms; graph search; shortest paths; data structures; greedy algorithms; minimum spanning trees; dynamic programming; NP-completeness; and more.

Courses Duration Effort Prerequisites
Algorithms (1/4) 4 weeks 4-8 hours/week one programming language, proofs, probability
Algorithms (2/4) 4 weeks 4-8 hours/week Algorithms (1/4)
Algorithms (3/4) 4 weeks 4-8 hours/week Algorithms (2/4)
Algorithms (4/4) 4 weeks 4-8 hours/week Algorithms (3/4)

Core applications

Topics covered: Agile methodology; REST; software specifications; refactoring; relational databases; transaction processing; data modeling; neural networks; supervised learning; unsupervised learning; OpenGL; raytracing; block ciphers; authentication; public key encryption; and more.

Courses Duration Effort Prerequisites
Databases 12 weeks 8-12 hours/week some programming, basic CS
Machine Learning 11 weeks 4-6 hours/week linear algebra
Computer Graphics 6 weeks 12 hours/week C++ or Java, linear algebra
Cryptography I 6 weeks 5-7 hours/week linear algebra, probability
Software Engineering: Introduction 6 weeks 8-10 hours/week Software Construction - Object-Oriented Design
Software Development Capstone Project 6-7 weeks 8-10 hours/week Software Engineering: Introduction

Advanced CS

After completing every required course in Core CS, students should choose a subset of courses from Advanced CS based on interest. Not every course from a subcategory needs to be taken. But students should take every course that is relevant to the field they intend to go into.

The Advanced CS study should then end with one of the Specializations under Advanced applications. A Specialization's Capstone, if taken, may act as the Final project, if permitted by the Honor Code of the course. If not, or if a student chooses not to take the Capstone, then a separate Final project will need to be done to complete this curriculum.

Advanced programming

Topics covered: debugging theory and practice; goal-oriented programming; GPU programming; CUDA; parallel computing; object-oriented analysis and design; UML; large-scale software architecture and design; and more.

Courses Duration Effort Prerequisites
Compilers 9 weeks 6-8 hours/week none
Software Debugging 8 weeks 6 hours/week Python, object-oriented programming
LAFF: Programming for Correctness 7 weeks 6 hours/week linear algebra
Introduction to Parallel Programming 12 weeks - C, algorithms
Software Architecture & Design 8 weeks 6 hours/week software engineering in Java

Advanced math

Topics covered: real analysis; multivariable integrals; multivariable differentials; probability theory; and more.

Courses Duration Effort Prerequisites
Introduction to Mathematical Thinking 10 weeks 10 hours/week pre-calculus
Multivariable Calculus 13 weeks 12 hours/week single-variable calculus (Calculus Two)
Introduction to Probability - The Science of Uncertainty 18 weeks 12 hours/week single- and multi-variable calculus

Advanced systems

Topics covered: digital signaling; combinational logic; CMOS technologies; sequential logic; finite state machines; processor instruction sets; caches; pipelining; virtualization; parallel processing; virtual memory; synchronization primitives; system call interface; and more.

Courses Duration Effort Prerequisites
Electricity and Magnetism, Part 11 7 weeks 8-10 hours/week calculus, basic mechanics
Electricity and Magnetism, Part 2 7 weeks 8-10 hours/week Electricity and Magnetism, Part 1
Computation Structures 1: Digital Circuits2 10 weeks 6 hours/week electricity, magnetism
Computation Structures 2: Computer Architecture 10 weeks 6 hours/week Computation Structures 1
Computation Structures 3: Computer Organization 10 weeks 6 hours/week Computation Structures 2
ops-class.org - Hack the Kernel 15 weeks 6 hours/week algorithms

1 Note: These courses assume knowledge of basic physics; if you are struggling, you can find a physics MOOC or utilize the materials from Khan Academy: Khan Academy - Physics

2 Note: A shorter, less intense (but still very advanced) alternative to Computation Structures is here: Computer Architecture

Advanced theory

Topics covered: formal languages; Turing machines; computability; computational geometry theory; propositional logic; relational logic; Herbrand logic; concept lattices; game trees; and more.

Courses Duration Effort Prerequisites
Introduction to Logic 10 weeks 4-8 hours/week set theory
Automata Theory 8 weeks 10 hours/week discrete mathematics, logic, algorithms
Computational Geometry 16 weeks 8 hours/week algorithms, C++
Introduction to Formal Concept Analysis 6 weeks 4-6 hours/week logic, probability
Game Theory 8 weeks x hours/week mathematical thinking, probability, calculus

Advanced applications

These Coursera Specializations all end with a Capstone project. Depending on the course, you may be able to utilize the Capstone as your Final Project for this Computer Science curriculum. Note that doing a Specialization with the Capstone at the end always costs money. So if you don't wish to spend money or use the Capstone as your Final, it may be possible to take the courses in the Specialization for free by manually searching for them, but not all allow this.

Courses Duration Effort Prerequisites
Robotics (Specialization) 26 weeks 2-5 hours/week linear algebra, calculus, programming, probability
Data Mining (Specialization) 30 weeks 2-5 hours/week machine learning
Big Data (Specialization) 30 weeks 3-5 hours/week none
Internet of Things (Specialization) 30 weeks 1-5 hours/week strong programming
Cloud Computing (Specialization) 30 weeks 2-6 hours/week C++ programming
Full Stack Web Development (Specialization) 27 weeeks 2-6 hours/week programming, databases
Data Science (Specialization) 43 weeks 1-6 hours/week none
Functional Programming in Scala (Specialization) 29 weeks 4-5 hours/weeks One year programming experience

Final project

OSS University is project-focused. You are encouraged to do the assignments and exams for each course, but what really matters is whether you can use your knowledge to solve a real world problem.

After you've gotten through all of Core CS and the parts of Advanced CS relevant to you, you should think about a problem that you can solve using the knowledge you've acquired. Not only does real project work look great on a resume, the project will validate and consolidate your knowledge. You can create something entirely new, or you can find an existing project that needs help via websites like CodeTriage or First Timers Only.

Another option is using the Capstone project from taking one of the Specializations in Advanced applications; whether or not this makes sense depends on the course, the project, and whether or not the course's Honor Code permits you to display your work publicly. In some cases, it may not be permitted; do not violate your course's Honor Code!

Put the OSSU-CS badge in the README of your repository! Open Source Society University - Computer Science

  • Markdown: [![Open Source Society University - Computer Science](https://img.shields.io/badge/OSSU-computer--science-blue.svg)](https://github.com/open-source-society/computer-science)
  • HTML: <a href="https://github.com/open-source-society/computer-science"><img alt="Open Source Society University - Computer Science" src="https://img.shields.io/badge/OSSU-computer--science-blue.svg"></a>

Evaluation

Upon completing your final project, submit your project's information to PROJECTS via a pull request and use our community channels to announce it to your fellow students.

Your peers and mentors from OSSU will then informally evaluate your project. You will not be "graded" in the traditional sense — everyone has their own measurements for what they consider a success. The purpose of the evaluation is to act as your first announcement to the world that you are a computer scientist, and to get experience listening to feedback — both positive and negative — and taking it in stride.

The final project evaluation has a second purpose: to evaluate whether OSSU, through its community and curriculum, is successful in its mission to guide independent learners in obtaining a world-class computer science education.

Cooperative work

You can create this project alone or with other students! We love cooperative work! Use our channels to communicate with other fellows to combine and create new projects!

Which programming languages should I use?

My friend, here is the best part of liberty! You can use any language that you want to complete the final project.

The important thing is to internalize the core concepts and to be able to use them with whatever tool (programming language) that you wish.

Pro CS

After completing the requirements of the curriculum above, you will have completed the equivalent of a full bachelor's degree in Computer Science, or quite close to one. You can stop here, but if you really want to make yourself valuable, the next step to completing your studies is to develop skills and knowledge in a specific domain. Many of these courses are graduate-level.

Choose one or more of the following specializations:

These aren't the only specializations you can choose. Check the following websites for more options:

Where to go next?

  • Look for a job as a developer!
  • Check out the readings for classic books you can read that will sharpen your skills and expand your knowledge.
  • Join a local developer meetup (e.g. via Meetups.com).
  • Pay attention to emerging technologies in the world of software development, such as:
    • Elixir, a new functional programming language for the web based on the battle-tested BEAM VM!
    • Rust, a systems language which uses borrowing and lifetimes to achieve memory safety without a garbage collector!

keep learning

Community

PS: A forum is an ideal way to interact with other students as we do not lose important discussions, which usually occur in communication via chat apps. Please use our subreddit/group for important discussions.

How to show your progress

  1. Create an account in Trello.
  2. Copy this board to your personal account. See how to copy a board here.

Now that you have a copy of our official board, you just need to pass the cards to the Doing column or Done column as you progress in your study.

We also have labels to help you have more control through the process. The meaning of each of these labels is:

  • Main Curriculum: cards with that label represent courses that are listed in our curriculum.
  • Extra Courses: cards with that label represent courses that was added by the student.
  • Doing: cards with that label represent courses the student is current doing.
  • Done: cards with that label represent courses finished by the student. Those cards should also have the link for at least one project/article built with the knowledge acquired in such course.
  • Section: cards with that label represent the section that we have in our curriculum. Those cards with the Section label are only to help the organization of the Done column. You should put the Course's cards below its respective Section's card.
  • Extra Sections: cards with that label represent sections that was added by the student.

The intention of this board is to provide our students a way to track their progress, and also the ability to show their progress through a public page for friends, family, employers, etc. You can change the status of your board to be public or private.

Team

References