Charging up your power level is not complicated at all mostly you will power up for transformation like SSJ 1, and for battles. If you want to do moves like kamaehamaeha x4 you must charge for four turns before say hit. If you want to charge to 100 type charges for one hundred times. Just to make it fair for the other person. If you to know the damage caused by this times the hp by the number of times charged. That is also the same for the ki used for the attack.
