# Contents Courses and guides for developers looking to learn how to build on Urbit. * [Environment Setup](/build-on-urbit/environment.md) - How to set up your developer environment. * [Hoon School](/build-on-urbit/hoon-school.md) - Learn the basics of Hoon, Urbit's high-level programming language. * [App School I](/build-on-urbit/app-school.md) - A detailed guide to Gall, Urbit's app framework. * [App School II](/build-on-urbit/app-school-full-stack.md) - A walkthrough for building an Urbit app with a Gall backend and a React frontend. * [Core Academy](/build-on-urbit/core-academy.md) - Guide to Urbit OS and the runtime. * [Tools](/build-on-urbit/tools.md) - Useful third-party libraries. * [Userspace](/build-on-urbit/userspace.md) - Misc. tutorials and examples for app development on Urbit. * [Runtime](/build-on-urbit/runtime.md) - A guide to working in the Urbit runtime. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.urbit.org/build-on-urbit/contents.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.