Added Git for Professionals Tutorial at free-courses-en.md

Git for Professionals Tutorial - Tools & Concepts for Mastering Version Control with Git

courses/free-courses-en.md

@@ -322,6 +322,7 @@
 * [Git & GitHub Tutorial for Beginners](https://www.youtube.com/playlist?list=PL4cUxeGkcC9goXbgTDQ0n_4TBzOO0ocPR) (The Net Ninja)
 * [Git and GitHub for Poets](https://www.youtube.com/playlist?list=PLRqwX-V7Uu6ZF9C0YMKuns9sLDzK6zoiV)
 * [GIT for beginners](https://www.eduonix.com/git-for-beginners) - Maksym Rudnyi (Eduonix Learning Solutions) *(account or email address required)*
+* [Git for Professionals Tutorial](https://www.youtube.com/watch?v=Uszj_k0DGsg) - Tobias Günther, freeCodeCamp (YouTube)
 * [GitHowTo](https://githowto.com)
 * [How to Use Git and GitHub](https://www.udacity.com/course/how-to-use-git-and-github--ud775) (Udacity)
 * [Introduction to Git and GitHub](https://www.coursera.org/learn/introduction-git-github) - Google (Coursera)