Do you have a pizza peel? It's that wooden thing they use to slide the pizzas in and out of the oven. If not, get one. You leave the pizza stone in the oven all the time and use the peel slide it on and off the pizza stone.

And don't buy cornmeal. It's gritty and gross. Get semolina and spread it lightly all over the pizza peel before you put the spread out dough on top of it. The semolina acts like tiny ball bearings that let the pizza roll off of the peel easily. If you aren't using a pizza peel, there's no reason to use either cornmeal or semolina. And as long as your oven & pizza stone are hot enough, the pizza should never stick to the stone.