Level-up your React skills from the comfort of your browser.

Learn React By Itself

No NPM. No Webpack. No Redux.

By James K Nelson
Learn the fundamentals of React by creating an animated fractal. Build your first React app in only 2 minutes. And all without leaving your browser!

Context-free Routing

By James K Nelson
Learn how to create a simple push-state based React router that doesn't rely on the experimental context API.

Lifecycle Simulators

Deepen your understanding of component lifecycle by stepping through each method in slow-motion.

Events Live Cheatsheet

Live examples of common React events, including usage of common properties on their event objects.

Printable Cheatsheets

The most important React and ES6 reference material in 5 printable PDF cheatsheets. Everything you need in one spot.