Sometimes ytou don't know how to do a specific move. Once you know how, then it becomes a piece of cake! Let me tell you. Oh and this is only if your settings are default.

Light Kick: X
Medium Kick: O
Light Punch:
Medium Punch:
Hard Kick: R2
Hard Punch: R1
EX move: (while having EX bars) joystick push in a direction + L1 or L2
Focus move: Hold down X and O
Super Combo: (usually) joystick in a direction twice and then punch or kick
Ultra Combo: (usually) joystick in a direction twice and then L1 or L2

But I'm not very sure how to do moves that requiure charging