The first gun I ever shot was a generic single shot .22 rifle at summer camp when I was a kid. I have no idea what it was other than that really. Once when I went duck "hunting" with some cousins in Louisiana we perforated a old rusted 55gl barrel with a .410 shotgun, but those two times were my only exposure to firearms in childhood though, as my mother was really anti-gun.
Fast-forward to post college and my wife bought me a Ruger 10/22 and a Browning Buckmark for my birthday, or Christmas I can't really remember. I don't have the wife anymore, but I do have those .22s.
I do remember my first centerfire handgun, as it was the first one I personally picked out and purchased. It was a Browning dual mode, or a BDM, a very nice full-sized double stack 9mm handgun. I still have it, though it doesn't get fired as much as it used to as I have fallen under the spell of High Power.
Tex