Egghead.io is so generous to give away two and a half hours of React course which covers how to kick start with React and Advanced Patterns for FREE.
Beginner’s Guide course is for React newbies and those looking to get a better understanding of React fundamentals. With a focus on React fundamentals, you’ll come out of this course knowing what problems React can solve for you and how it goes about solving those problems.
Advanced Patterns course gives you the knowledge of advanced patterns you can use to make React components that are more flexible, simpler, and more fun to build, use, and maintain.
I would strongly suggest every UI Developer to go through the course and get benefited.
Here are the links for React Course –
The Beginner’s Guide to ReactJS – https://egghead.io/courses/the-beginner-s-guide-to-reactjs
Advanced React Component Patterns – https://egghead.io/courses/advanced-react-component-patterns