Added free react courses (#7579)

* added two new javascript books that are free

* added two new javascript books that are free

* added free reat courses

* added free reat courses

* Update free-courses-en.md

Author: ezeamaka2

Diff for: courses/free-courses-en.md

@@ -694,9 +694,12 @@
 * [React Context & Hooks Tutorial](https://www.youtube.com/playlist?list=PL4cUxeGkcC9hNokByJilPg5g9m2APUePI) - The Net Ninja
 * [React Crash Course 2020](https://www.youtube.com/watch?v=4UZrsTqkcW4) - freecodecamp
 * [React Hooks](https://www.youtube.com/playlist?list=PLZlA0Gpn_vH8EtggFGERCwMY5u5hOjf-h) - WebDevSimplified
+* [React Router 6 – Tutorial for Beginners](https://www.youtube.com/watch?v=59IXY5IDrBA) - John Smilga (freeCodeCamp)
+* [React State Management using Context API (useContext + useReducer Hooks = Magic)](https://www.youtube.com/watch?v=zxP4oGejqpU) - The Full Stack Junkie
 * [React Tutorials](https://www.youtube.com/playlist?list=PLWKjhJtqVAbkArDMazoARtNz1aMwNWmvC) - freeCodeCamp
 * [ReactJS - Tutorial for Beginners](https://www.youtube.com/watch?v=Ke90Tje7VS0) - Mosh Hamedani (Programming with Mosh)
 * [ReactJS Basics](https://www.youtube.com/playlist?list=PLe30vg_FG4OSw8SIcLVci-jB_-W1ZkLYp) - Bitfumes
+* [ReactJS Course For Beginners 2022](https://www.youtube.com/playlist?list=PLpPqplz6dKxW5ZfERUPoYTtNUNvrEebAR) - PedroTech
 * [ReactJS Frontend Web Development For Beginners](https://www.udemy.com/course/react-tutorial/) - Ryan Dhungel (Udemy)
 * [ReactJS Full Course for Beginners \| Complete All-in-One Tutorial \| 9 Hours](https://www.youtube.com/watch?v=RVFAyFWO4go) - Dave Gray
 * [ReactJS Tutorial for Beginners](https://www.youtube.com/playlist?list=PLC3y8-rFHvwgg3vaYJgHGnModB54rxOk3) - Codevolution