Fallout 3 lock picking

ok so i have yet to pick a lock in fallout 3 i broke like 6 bobby pins trying to do so lol i just dont get what they want me to do. do you thrust the screwdriver when you feel resistence on the bobby pin? or will you hear a click? thx

Once you put the pin in, turn very lightly. The more pressure you use, the quicker the pin will break. So be easy with it. If it starts rumbling, stop touching everything and move the bobby pin elsewhere and try again. That means there's pressure and the pin is going to break.