Whats a good site to learn different martial arts techniques?

Right now I'm mostly looking for things like throws and submissions (locks, bars, just things to cause discomfort so people give up). I'm not finding much useful stuff on my own and the dojos around here just teach kid stuff that i learned a long time ago and still easily remember (how to fall, balance, escape form someone grabbing your wrists, etc.). so now basicly I'm looking for things besides strikes that can be used both for self defense and kind of messin around w friends (we wrestle till submission). so if anyone on here knows any good sites for that kind of stuff post them please. I go on youtube but it's hard to find mroe than one or two good vids.