This book is a collection of in-depth guides to some some of the tools and resources most used with React, such as Jest and React Router, as well as a discussion about how React works well with D3, and a look at Preact, a lightweight React alternative. This book contains: Getting Started with Redux by Michael Wanyoike React Router v4: The Complete Guide by Manjunath M How to Test React Components Using Jest by Jack Franklin Building Animated Components, or How React Makes D3 Better by Swizec Teller Using Preact as a React Alternative by Ahmed Bouchefra This book is for front-end developers with some React experience. If you’re a novice, please read Your First Week With React before tackling this book.