Volley is pretty easy. :P You go to Maya and you'll see a guy sitting on a basket. Talk to him and he starts to levitate. Then he will teach you a skill if you get him some snake fang thing. Go north from Mayan village until you hit this cave entrance that is in the shape of a snakes head. Then go inside, kill a boat-load of snakes. Return to the levitating man. Give him the snake fang (whatever it is, I forget) and then he will teach you volley for some stars (3 I think?)