I keep a big list of links to high-quality tutorials and articles on React, Redux, and related topics, at https://github.com/markerikson/react-redux-links . Specifically intended to be a great starting point for anyone trying to learn the ecosystem, as well as a solid source of good info on more advanced topics.
I'll also specifically highlight the Reactiflux community on Discord. It's a great place to ask questions, chat, and learn about React and related technologies. The invite link is at https://www.reactiflux.com .
I publish a series of React tutorials on Udemy.com, check the first one out here: https://www.udemy.com/react-redux?couponCode=HSALE10. I've had many people go through the course and they generally seem to enjoy it :)
Plus one on that although I did the react native one. The best thing is Stephen doesn't leave a stone unturned in explaining things. I am never left with a nagging question after a lecture.
The Road to learn React [0] was released in November and already improved to its 3rd edition (released a few weeks ago). It is up to date, pay what you want and people enjoy it. If you want to check it out, I would be keen to hear your feedback!
It's the gold standard IMO for an intro to React