GEEZE.....ALL you gun NUTS on here are scarin' me. Next you'll say that EVERYONE should own a gun. Just last night in my town, one of those EVIL black assault rifles jumped off the rack it was stored on and went walking down the street looking for someone to shoot. I mean that is the only reason guns are made is to shoot some poor little kid. I know this because I read it on the news paper all the time. I also know that the reason Rosie O'Donnel is over weight is because she has un licensed forks in her kitchen drawer?? All my mis spelled words when I was in college were caused by my unregistered pencils, too. Somebody needs to take care of us. HELP!
That was OBVIOUSLY not how I feel. but back to the original question. I agree with the above suggestions. (not that "I" would own such evil things.

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Go to your local gun range and shoot EVERYTHING that they have. Then choose what YOU like the best. Revolver is best for newbies, because there is less chance of misfire. If it does, just pull the trigger again. If an auto misfires, you MUST be able to clear it and keep going. Hard to do when the Stuff is hitting the fan. Home......12ga 00Buck Remington or if money is an issue, use a Mossberg . (clanky but they work) Pump is probably best, because even if the bad guy has never heard a 12 gauge rack a round, they will KNOW what it is the first time they hear it, just like a rattlesnake.

Just my 2 cents.