As a very new student at Mastery Jiu-Jitsu, I find these videos to be very important to my learning. I watch the video of that day's curriculum before class as a primer. If I have time, I sometimes watch it again after class because I believe that, that is the best way for me to eventually retain the material. One of the things that I find fascinating about Jiu-Jitsu is all of the detail, and you do a great job of presenting the details as well as safety tips. Big fan!