fifa 10 help

howdy fellas.

got fifa 10 on friday night. i don't know much about soccer, but its an awesome game.

im playing on amateur level (usually with barcelona) and i can get a ton of good shots off like 30 or so a game, i just dont get goals. i think ive got the kick power thing under control and only half of my shots go into the crowd, a vast improvment over "all of them."

my question is, how do you use the different shot types. LB chip shot, RB precision shot or just a normal shot.

thanks in advance. also, any other begginer help is much appreciated.