Step 1: Prep
Heat your gas grill to hot-as-hell, or as high as it'll go. If you're cooking on charcoal, use direct heat.
The pizza cooks quickly, and you won't have time to be running around, so gather all your toppings while the grill gets to the correct temperature. Anything you like on a pizza you'd cook in the oven will work just as well on the grilled pie.