X-Escape by Robson Moura

Great concepts and techniques

Robson is one of the best instructors and most technical fighters. He shows a lot of great concepts for keeping safe in half guard and side mount and then goes into a system of control which leads to sweeps and submissions. There is a lot of fun techniques in this series to add to your game.

Right up my street

Unreal, unbelievable detail by 1 of my favourite grapplers

One of my favorites