ahhh...I love the lock picking interface in this game. it takes a second to two to get used to, but once you get it, you've got it, you know?

bascically, use the left analougeand silde it slowly around the outer edge of the range of the circle. once you feel the controller vibrate, or hear a clicking noise, stop, and wiggle the stick around in it's place for awhile. you will hear another click if you do it right, and you will see a pin lift up. some doors have as many as six pins, so you may have to do this six times. i believe the training room door has six pins....

ahh...1111 beat me

aww....if you took it back you'd miss out!!! besides, you'd probably only get store credit. lol

right trigger = R1 just like a gun.
stand in front of the door and hit it.