[Rzor]

https://fullstackopen.com/en/

>Learn React, Redux, Node.js, MongoDB, GraphQL and TypeScript in one go! This course will introduce you to modern JavaScript-based web development. The main focus is on building single page applications with ReactJS that use REST APIs built with Node.js.

It may fast forward a bit on the fundamentals, but they are still there. Along with MDN (to supplement) I think it is a great option.

[sylens]

I second this. I really learned a lot about React from this site. The exercises are designed in a way to make you stretch your knowledge and skills without making you feel completely lost.