This thread does not seem to be all that active anymore so not sure if anyone else will find this useful… but I’m surprised nobody mentioned CodeAcademy.com’s courses. There are 2 intro to React courses and I found them both to be very useful. I’ve never found their lessons to be quite as intuitive as FCC’s, BUT, they are interactive and get you coding right away.
I was still slightly flustered at the end of the second course (I did them both in 2 days to keep it fresh), as it is a lot of info to take in, so had to pick apart some people’s code on CodePen to really get started - but the combo was great and I just (sort of) finished building my 2nd React app! I did the markdown previewer, but also implemented a tool bar, which seemed a bit more fun. Check it out!