None, firearms anyways. I've handled bb/ pellet guns that are replicas to weight and size. But never carried it on my person, just for fun.
Nobody had experience before their first time. Just know the basic firearm safety rules, know the parts of the gun you have and what they do. Practice without ammo. Go over the safety rules in your head before and while handling. Practice and then when your ready go to the range and practice firing. Keep your finger off the trigger until your ready to fire and remove it every time your done firing.
Don't know many people that carry a gun for "fun". Range time can be fun, but it is still serious and so is carrying one.
^^ This ^^
As a first time owner, you'll get a lot of info, from a lot of different people. Some of it good, and unfortunately, some of it blatantly false. Best thing you can do is do your own research from trusted sources, and if possible, take a class from an NRA certified instructor. I don't know what your state's requirements are, but there is no substitute for trigger time under the supervision of a good instructor.
Some good, indisputable (hopefully) info....
Know and practice the four rules of firearm safety
1. Treat all guns as if they are loaded. At all times. More accidents happen when people assume a firearm is unloaded than anything else. Check, recheck, and double check, every time, whether someone is handing it to you from out of a case, or it's your own gun and you're just cleaning in. If you treat it as if it's loaded, you will be less likely to break the other 3 rules.
2. Never point a gun at anything you are not willing to destroy or kill. Loaded or not (rule #1) you can't hurt someone or something important if the gun isn't pointed in their direction. Handing it too/from a sales clerk, muzzle down, pointed in a safe location. Pulling it from the safe to show a friend - same thing.
3. Keep your finger off the trigger until your sights are on target and you're ready to fire. A properly functioning, modern firearm will not fire without pulling the trigger. Anytime the pistol is in your hand, your finger should be outside the trigger guard until you plan to fire. Even if, lord forbid, you are intentionally pointing it at a 'bad-guy', you can't accidentally shoot them until your finger is on the trigger.
4. Know your target, and know what is beyond it. Are you sure of what you're pointing your gun at, and it's something you want to shoot? (rule #2) Do you know what is behind it in the line of fire? Paper targets don't stop bullets. Neither does drywall, curtains, bushes, or many other things. Once the bullet leaves the barrel, you can't take it back. A proper shooting range has a backstop designed to stop projectiles, but if your shooting cans off the fence, what's beyond that fence? Is it ten acres of your own farmland, or is there a hiking trail just beyond the tree line? Even if you're being threatened by an attacker, is there a concrete wall behind him or a couple of scared kids? You are responsible for every shot you fire, so make sure you know where it's going to end up.
Have a good, working knowledge of your state's firearm laws. This one's tough, because laws aren't written in easy to understand language most times, they sometimes contradict themselves, and every state's laws are different. It's very easy for a law abiding citizen to accidentally run afoul of gun laws, and ignorance of them is no excuse in court. Know exactly where you can and can't legally carry. Know exactly how you can carry, and what you need to do so. Know how you must secure them, and what your responsibility in doing so is, under the law. But don't,
don't, trust anyone else's opinion, except that of a lawyer well versed in firearm laws of your state. Most people think they know the laws based on what they've overheard over the years, but have never bothered to research them themselves. They've heard bad info from their brother-in-law, neighbor, or a guy at the shooting range, or even at a gun store. Heck, even many officers are unaware of the actual laws they are trying to enforce (this is not to bash cops, but it is true). Often, you're hearing more opinion than fact from people trying to discuss law with you. There's a lot of misinformation out there. Do your own research, and keep yourself on the right side of the law.
Owning and carrying a firearm is a big responsibility, treat it as such. Let's face it, we're not talking about owning and carrying a cellphone. We're talking about an item whose primary design function is to throw a lead projectile at extreme velocity with lethal force. When that item has your name on the paperwork, ultimately YOU are responsible for everything associated with it, as well as the image you portray. I know this seems like common sense, but it bears being said.
I know this was a little off-topic, but hopefully it'll help you as you move forward with buying a firearm, and eventually carrying one. Too many newbies are just handed the receipt for their new gun, and just left to their own devices with little or no guidance.