Look at a remington 870 express. It is a single barrel pump action, but is a great starter and all around gun. It has screw in chokes for different patterns and you can buy different barrels if you want a slug barrel. This gun will take 2 3/4 and 3" magnum shells. It is easy to maintain and handle. Stay away from double barrels for your first gun, nothing wrong with them, but more limited and specialized. If you want a semi-auto the remington 11-87 is a good choice.