pick any of the top results on youtube for react development. course not super necessary but if u really want, check react on coursera and take any of top results with good rating.
if you want to be very successful dont glue yourself to one specific stack.
start with react node but focus on patterns like how requests are made from client to server, server gives back responses. you application had metrics, logs, likely connects to some database.
it would be good to take an intro to CS course on YouTube. Stanford and mit have free online.
Deeper understanding will help u differentiate from crowd of everyone else trying to take boot camp and become coder.
practice what you learn. Code side projects. learning react? Everything u learn, try apply to your own website.