I looked at a couple of his videos. Is this a real series or something? You cannot learn this stuff this way. In the real world you do these things a thousand times (literally) in order for them to be a "natural response", to be able to do them with accuracy, proficiency, and proper execution. There is a lot of physics and biology (joint locks, leverage) that comes into play and these techniques are more involved than what you see in these videos.
Looks to me like he is just attempting to make money than really help anyone.
Steve