wats up... well Im not exactly in TKD but Im in muay thai and i trasitioned to jiu-jitsu. Ummm well it looked a hell of alot easier and it has more flow to it. IF you dont know ANYTHING about jiu-jitsu, you should probably practice basic positions like guard, side mount and all that and practice on breaking out of other peoples guard and getting a good position before you just go out there and do it. Learning a move isnt enough, you have to be able to use it and practice the techniques before you go out there. When i first started all i knew was how to pass guard , an arm bar and rear naked choke, and that worked fine.