5−Interested in developing on Urbit? You’ll want to learn [Hoon](https://urbit.org/docs/learn/hoon/), a functional programming language that’s custom-designed for use with Arvo, the Urbit operating system.
5+Interested in developing on Urbit? You’ll want to learn [Hoon](https://urbit.org/docs/tutorials/hoon/), a functional programming language that’s custom-designed for use with Arvo, the Urbit operating system.
7We want you to learn Hoon, too. That’s why we’re offering Hoon School: a free, asynchronous program that’s fully supported by an instructor. Hoon School is offered in the form of two courses: Hoon 101 and Hoon 201. Classes are offered three times a year.
7We want you to learn Hoon, too. That’s why we’re offering Hoon School: a free, asynchronous program that’s fully supported by an instructor. Hoon School is offered in the form of two courses: Hoon 101 and Hoon 201. Classes are offered three times a year.