Where or how can I learn...?

Some sort of military martial arts or hand to hand combat? I have a lot of friends who take karate and Brazilian jujitsu but (my wording may be wrong) that all seems very mainstream... i.e. these are forms of martial arts that many people learn. I would much rather be able to whip out a few moves from MCMAP or some special forces techniques, nothing lethal... just something effective. I've asked this question before since I really want to get a head start on training for the Corps (I'm an aspiring Marine) but I never got back any useful feedback. So is there any website, youtube channel, handbook, or anything that could show me a few moves? Thanks.