Ownership, borrowing and lifetimes explained from first principles, with projects that build up a working command line program.

The Rust Programming Language Book

The official interactive guide to components, state, effects and hooks, written by the team that maintains the library.

Learn React

Millions of answered programming questions, ranked by community votes, covering every mainstream language and framework.

Introductory material on the event loop, modules, streams and file access for running JavaScript outside the browser.

The reference most developers actually keep open: language guide, full API listings, and runnable examples for every built in object.

The official walkthrough of the language: data structures, functions, classes, modules and the standard library, with worked examples.