First, be safe.Point the gun in a safe direction with your finger off the trigger. Remove the magazine and leave it out. Pull and hold back the slide, make positive eye contact that the chamber is empty. Second, find yourself an NRA Gun Safety class. Search online, lookup local gun shops. Take the class, leaving the gun at home unloaded and locked away. Learn to be safe FIRST, that's the main thing. Go slow on getting rid of the gun you have. Start by researching it, "Standard Arms" could very well be a cheap piece of junk, or not. There are multiple companies with a name like that. Find every mark on the gun. Where was it made? City and state? Or country? Google the full name and place of origin as engraved on the gun. Look it up in the GunBroker.com listings. After you have read up on it, wrap it up in it's safe state, magazine separate, paying attention always to where the muzzle is pointing and find a local gun store with a gun smith. Ask them if the gun is safe to shoot. If it is, buy a box of ammo from them, even if you do not need it. Nothing fancy, you want plain cheap stuff to practice with. "9mm 115gr FMJ" will serve you just fine. Further discussion may ensue, that's a thing that happens in local gun stores. Ask about a range to try the gun out. Anticipate needing to buy a cleaning kit, and sooner than later. YouTube is terrific for finding videos on how to take specific guns apart for cleaning. We call it a "Field Strip" or basic tear-down. Just enough to get and remove the dirt, put the gun oil where it should be, and as always be safe about it. About Ruger, I've owned Rugers my entire life and that's been a while. My present sidearm is a Ruger SR9, which I prefer for the grip and how it fits my hand. But the Security 9 and other Rugers are very good guns too, no problems there. With the major gunmaker brands you can pretty much focus on your budget and how you like the specific model when you try it out. I wouldn't shy away at all from the Smith & Wessons, for example, among others.Their model with the "EZ" designation is a particular feature, the slide has a lighter spring for easier "racking". Helpful for some folks. If that Standard Arms pistol is safe, consider getting some target shooting experience first. And do that before you buy another gun. Give yourself time Another thought, some gun shops have ranges too, and you can rent a gun to try out the model. It adds some expense, but for newbies it is a real advantage. You would also find training opportunities in such a place. Good luck, enjoy and above all else be a SAFETY NUT!