Study MTS without a doubt. Youtube, obviously, has a lot of material. I initially learned rubber guard while deployed studying "Mastering the Rubber Guard". If you have the resources study Eddie's Twister and Rubber Guard DVD's as well and shadow drill/grappling dummy or with a partner. Once you become proficient at the techniques, I'd begin to apply them while free rolling. While free rolling, some of them will come naturally and you will execute rather quickly. If your instructor forbids you from executing techniques that he didn't teach then you will have to reassess your situation. I agree with Dylan, always respect your instructor, which is why I am 10P4L because Eddie always encourages learning, period.