I would recommend a revolver as well, especially if you've never learned to shoot a pistol. They're extremely reliable as there's less moving parts and they can help you get better with dry-fire/live-round drills (Have someone else load the chambers, then you shoot until you do not flinch on the empty chambers.)

Seems people rush into buying a pistol but more specifically Glocks. I dunno why... maybe from all the rap videos out there? Yes, they are great pistols as mentioned by myself and others, but there's a lot more out there regarding fit, features and overall availability. As for models, given the fact you want to buy used, recommending models is meaningless unless you come to us with the available models from various shops. If I was going for a revolver then i'd get an S&W in .38/357 and with a 6" barrel. This way you can shoot .357 mag for protection and .38 special for plinking/practice. If I were opting for a pistol i'd look into any base model 1911 model to start then Sig. But if the fit/features of the Glock floats your boat then by all means buy one because they’re great pistols.

But you really need to call around to see what's available (if anything), then go to the gun stores to actually feel the weapons in your hand. And if they have a range and weapons to rent, try some.