hey guys, so I'm not necessarily new to martial arts. I have a black belt in taekwondo, and did boxing for a few months before leaving. now I really want to start doing MMA. I've practiced on some kicks and on my stance from muay thai at home, and I'm planning to join an MMA gym soon. I was wondering if I needed to know anything else before I go to a gym. I'll appreciate if u guys link me videos, etc.