There are two places you can get dragonballs from. You can get them from Namek or Earth. The ones on Namek gives you 3 wishes and the ones at Earth gives you 1 wish. You can find the dragonballs with a scouter or a dragon radar. You find 1 dragonball everyday with a dragon radar and 1 dragonball each 2 days with a scouter.If someone else is looking for the dragonballs in the same planet as you are and they find a dragonball, you must battle them for it. After the battle, your opponent can still kill you if desired. If you find all dragonballs you can wish for either an item, bring someone back to life, bring everyone back to life, or to get somewhere. You CANNOT wish for total immortality, more credits, more SP, INT., HP, or PL, a new attack or to kill someone.