The simplest good way to cook shrimp is to poach them. Boil a large pot of water with half a sliced onion (technically optional) and a couple of bay leaves, maybe some crab boil if you've got it. When it's at a rolling boil, add the shrimp. When it comes back to a boil and all of the shrimp look nice and pink, or white, whatever kinda shrimp you got, should be pink on the east coast, drain it the same way you do pasta. You know have cooked shrimp.