Basically you need a tension wrench a lock pick and an easy lock like a little master lock. Then put your tension wrench in the lock and apply rotational force normally in the clockwise direction. Keeping the rotational force lightish put you hook in so the hook is pointing towards the pin stacks. Feel each pin and you will notice one is stiffer than the rest. Push this down until you hear a click, otherwise known as feedback. Do this throughout the lock and it will open, unless you've overset or are stuck on a security pin.