How to use the NLA in Blender (tips and Tricks for new experienced users)

Pierre Schiller writes:

If you´re an animator with previous 3D experience in other packages you need to know how the Non Linear Animation Editor works in Blender. We´ll review some key concepts first, and then we´ll be diving into practice with a short animation I created for my Blender anime conference later this year.Go from ZERO to HERO and MASTER one of the power lines in Blender animation.

I saw a lot of questions on new users from Blender Stack Exchange as well as many people who already know how to animate but can´t decipher how Blender NLA works, so I hope you like this video.