added traversy media courses (#5624)

courses/free-courses-en.md

@@ -357,6 +357,7 @@
 * [CSS Tutorial](https://www.youtube.com/playlist?list=PL_RGaFnxSHWqMH9a9DY8LFKrJ5NJCFHHe)
 * [CSS3 tutorial for beginners \| Learn CSS3](https://www.udemy.com/course/css3-tutorial-for-beginners-learn-css3/) - Udemy
 * [Flexbox in 30 Days](https://github.com/samanthaming/Flexbox30) - Samantha Ming
+* [HTML & CSS](https://www.youtube.com/playlist?list=PLillGF-RfqbZTASqIqdvm1R5mLrQq79CU) - Brad Traversy, Traversy Media (YouTube)
 * [HTML & CSS Crash Course](https://www.youtube.com/playlist?list=PL4cUxeGkcC9ivBf_eKCPIAYXWzLlPAm6G) - The Net Ninja (Shaun Pelling)
 * [HTML and CSS Crash Course](https://scrimba.com/learn/htmlcss) - Kevin Powell (scrimba)
 * [HTML and CSS Tutorials](https://www.youtube.com/playlist?list=PL0eyrZgxdwhwNC5ppZo_dYGVjerQY3xYU) - Dani Krossing
@@ -421,6 +422,7 @@
 * [learn:query](https://learnquery.infinum.co)
 * [Namaste 🙏 JavaScript: An In-Depth JavaScript Fundamentals Course](https://www.youtube.com/playlist?list=PLlasXeu85E9cQ32gLCvAvr9vNaUccPVNP) - Akshay Saini (YouTube)
 * [Programming Foundations with Javascript, HTML and CSS](https://www.coursera.org/learn/duke-programming-web) - Owen Astrachan, Robert Duvall, Andrew D. Hilton, Susan H. Rodger (Coursera)
+* [Vanilla JavaScript](https://www.youtube.com/playlist?list=PLillGF-RfqbbnEGy3ROiLWk7JMCuSyQtX) - Brad Traversy, Traversy Media (YouTube)
 
 
 #### AngularJS
@@ -442,6 +444,7 @@
 
 * [Bento jQuery Track](https://bento.io/topic/jquery) (Bento)
 * [Introduction to JQuery](https://www.udacity.com/course/intro-to-jquery--ud245) (Udacity)
+* [jQuery Crash Course](https://www.youtube.com/playlist?list=PLillGF-RfqbYJVXBgZ_nA7FTAAEpp_IAc) - Brad Traversy, Traversy Media (YouTube)
 
 
 #### Next.js
@@ -768,6 +771,7 @@
 
 * [Angular 6 Tutorials](https://www.youtube.com/playlist?list=PLYxzS__5yYQlqCmHqDyW3yo5V79C7eaTe) - codedamn (YouTube)
 * [Angular Courses](https://www.youtube.com/playlist?list=PLTjRvDozrdlxAhsPP4ZYtt3G8KbJ449oT) - Programming with Mosh (YouTube)
+* [Angular Crash Course 2021](https://www.youtube.com/watch?v=3dHNOWTI7H8) - Brad Traversy, Traversy Media (YouTube)
 * [Angular Fast Crash Course](https://www.udemy.com/angular-fast-crash-course/) - Edwin Diaz, Coding Faculty Solutions (Udemy)
 * [Angular for Beginners](https://www.udemy.com/course/angular-for-beginners-course/) - Angular University (Udemy)
 * [Angular Tutorial For Beginners](https://www.youtube.com/playlist?list=PLC3y8-rFHvwhBRAgFinJR8KHIrCdTkZcZ) - Codevolution (YouTube)