Here's a trick for using a stone when you're just starting out with it:

Set the stone on the bottom of the oven and a rack in the top third of the oven. Make your pie as you would normally in a pizza pan and set it in the rack up top. As as soon as the pizza starts to "set," remove it from the pan with a pizza peel and slide it directly on to the stone in the bottom of the oven. Then leave it until it's done.