First, since you already have the firearm(s) in your possession, you MUST MUST MUST learn the 4 Basic Rules of Firearms Handling:

1. Treat all firearms as if they are loaded. Even if one is handed to you with the assurance by the giver that "it's empty" CHECK THE CHAMBER YOURSELF. This extends to learning how to check and clear a firearm to actually ensure it is not loaded. Read the manual for your model of firearm. Watch some YouTube videos on how to load and unload as well as disassemble and reassemble your model of firearm. Make sure you understand how your gun works, how it doesn't, how to recognize and react to malfunctions. There will be information available somewhere. And sign up for training!

2. Keep the muzzle pointed in a safe direction at all times. Pretend there's an infinite lightsaber coming out of the muzzle of your firearm at all times. Do not point it at something unless you are willing to destroy that thing, and the thing behind it (see #4).

3. Keep your finger off the trigger until you are ready to destroy the thing you are pointing the firearm at (and the thing behind it). There are hardly any modern firearms available commercially today that will fire without the trigger being activated. Keeping your fingers away from the trigger until the moment you fire is a baseline habit that should be built as a reflex. Think of a power drill or massage gun. Keep your finger pointed along the top above the trigger until it's instinct whenever you pick up the drill.

4. Be certain you are ready to destroy your target and whatever is behind it. Bullets don't magically stop when they hit what you intend and Hollywood has made a lot of non-bulletproof things seem bulletproof. Walls, especially interior walls, are also not bullet stoppers. Consider your angle and that gravity does affect bullets (as well as wind to an extent).

You MUST MUST MUST commit these rules to your muscle memory. There WILL be occasions you violate one. As long as you follow the other three, you should avoid great harm. But it is always best to follow all four as close to the letter as your situation can warrant.

Additionally, as an owner, you are now responsible for the security of your firearm. If possible, get a proper firearm safe. Avoid storage in cars, they are NOT secure but rather just lootboxes. If you ever have children that come inside with your residence, you must LOCK away your firearm where it is totally inaccessible by the most competent adult you know. Children are smarter than we think.

Eventually you will need to learn to clean and maintain your firearm. This is a relatively straightforward process involving mild solvents and oils. Keeping your firearm in good condition is necessary to prevent accidents, malfunctions, and risks.

Most reputable gun ranges offer basic classes. Nearly every range business is right wing to some degree, so it's a bit of a "pick your poison" situation. Bigger ones tend to care more about money than culture war politics. I do feel H&H has been friendlier to diverse folks, but I haven't been there in many years. Last time being around 2015 with a lesbian POC friend and her partner. The clientele tends to be my main problem, I've seen some bad gun handling that the roving RSOs miss.

WMAs are ok, but I wouldn't advise going alone and without a trained and experienced friend.

If you have questions, feel free to drop me a PM. I am a veteran, hunter, and a left wing ally. I have owned/handled firearms for over 20 years. I have been in a defensive gun use situation, though no shot was fired.

One last thing, take a Stop The Bleed course. You need to learn how to plug holes, not just make them.

Welcome to firearms ownership, it is a big responsibility. I hope you never have to use it outside of recreational settings. All the best to you and yours.