Resources for learning JavaScript

• Hitesh Choudhary's JavaScript Playlist

• Codedamn's Javascript Crash Course

Resources for learning React JS

• Read the documentation over here

• The Net Ninja's React Tutorial

• Bitfume's Ultimate React Tutorial

Learn Node js

• Dev eds intro to Node JS

• freeCodeCamp's Node and Express Crash Course

Get started with the MERN stack

I would also suggest to learn more about SQL and NOSQL databases in depth before jumping on to MERN

• MERN Tutorial by Traversy Media

Strenghten your Node js skills

• Codedamn's Advanced NodeJS Course

Want to learn TypeScript also?

• Net Ninja's Typescript Tutorial

• Academind's Tutorial on Typescript

• Ben Awads TypeScript Tutorial

Learn GraphQL

• freeCodeCamp's GraphQL Tutorial

Go pro with this one

• Ben Awads 14 Hours FullStack Course