First gun? Why not a nice 22? Bolt action or auto, it doesn't matter. Don't put a scope on it until you are GOOD at using the iron sights out to 100 yards. Put a few thousand rounds through the .22 and then buy another gun.
Might as well get a .22 handgun to match the rifle. Revolver or auto, doesn't really matter although many say a revolver is a better first gun due to it's simplicity. I learned to fire hanguns using a S&W K-22 revolver, a beautiful pistol. I highly recommend AGAINST a browning buckmark as a first pistol because it cannot be decocked, so once a round is in the chamber the gun is ready to go with a light single-action trigger pull, and no way to decock it except to extract the round manually and pull the trigger on the empty chamber. It is a terrible first pistol and an even worse "field" gun.
My first rifle was a ruger 10-22 and my first pistol was a buckmark, but I had years of shooting experience before I bought them. My next guns were a ruger mini-14 ranch rifle (with scope mounts) and a beretta just like the military uses except chambered in .40 cal for extra punch, so I could use my own gun to help train me for my official duty pistol qualification. It worked, since I've shot expert every time I've had to qual in the M-9, M-16, and M-4.
