For the sauce I use one 8oz can of tomato sauce and one 6oz can of tomato paste. I add garlic, salt, pepper and oregano. This makes about six pizzas (I freeze the rest in individual containers for next time). Two tablespoons of sauce for one 15" dia. crust. is plenty. I put a thin layer of shredded Parmesan cheese on the sauce and then add ingredients and cover with about a pound of shredded mozzarella. Sausage and pepperoni are the only ingredients that go on top of the mozzarella (pepper slivers are ok on top for beautification).
Ingredients are depending upon personal taste, but if you've never tried, put diced shrimp on about 1/2" thick for a seafood delight. Canadian bacon, pineapple and sliced peppers are another personal favorite but I know pineapple offends the sensabilities of many.