guns

Okay first you need to figure out what you want to buy. I would start with a striker fired 9mm pistol. Think Glocks, Smith and Wesson M&Ps, CZ P-10s etc. These are like the toyotas of pistols, unsexy but reliable. Smaller guns mean more recoil so I'd recommend a compact or full size. That gives you 10-17 rounds per magazine, and can be used for home defense or for concealed carry if you want. They normally run $300 to $600 or so.

Online research is fine (while you are at it look up a gun safety basics video like this) but you really need to go to a store and feel which one is the most comfortable to you. When you're ready to buy they will give you a form 4473 to fill out (idk about you but I NEVER mess with marijuana when it comes to gun stuff), and you'll be a gun owner! Don't forget some boxes of training ammo (115gr FMJ). 50-200 rounds is a good start.

Next look at a holster. Kydex is preferred since it is specifically shaped to the model of your pistol and light, which you should also order now if you want one. Streamlight and surefire are solid brands that won't limit your holster options.

Then find a class and learn as much as you can! A concealed carry course will teach you basics and legal aspects of defensive gun use. Practicing between classes is key. Don't be afraid to safely dry fire or clear rooms in your house. It looks goofy but it's fun too! Once you're comfortable you can find competitions and give it a go, they will challenge your skills under pressure.

Beyond pistols, AR-15s are popular for a reason. Lightweight, ergonomic, low recoiling, precise. They can handle everything from home defense to 300+ yards and there are plenty of classes for those as well.

Hope this helps!