React.js Fundamentals LiveLessons covers vanilla React, as well as a refresher on some advanced javascript topics and essential ES6 features. You first learn how to create a modern React toolchain. Next, the training covers the advanced javascript concepts that regularly pop up in React and the modern ES6 features you’ll need to write more idiomatic React code. Next, the training covers a conceptual understanding of React and takes an in-depth look at how React’s virtual dom works. Starting in Lesson 6, you dive into writing React code using the original create class syntax and begin to look at the JSX. Next, you see how to rewrite your earlier code using modern ES6 features. From there, you learn the remaining vanilla React topics, such as component life cycle and state management. The training wraps up with a discussion of how you can tweak performance in React apps.