Hey Dave... this is what
I would do
Like Spectre and munk and bunches of others, I'd say go find a single shot .22. In fact, I'd say go find a an old USED one (yeah I know, other people's junk etc.) and don't put any optics on it for two years.
Then buy a couple of bricks...@1,000 rounds. Take a couple of hundred rounds with you and fill a light back pack with snacks and water, 50 or so index cards, couple of tin cans and maybe some larger coffee cans, couple of ping-pong balls, couple of golf balls, a couple of dozen balloons, and some paint-gun pellets, and and maybe a butt cushion to sit on.
Go out to a place where: 1. it is legal to shoot,2. there are no other folks around, 3. there is a hill side or quarry to shoot into and no possibility of a round careening into the distance, and where you can clean up any mess you make (like shot-up cards or cans, etc.)
(Be nice if you had a friend who has shot with you to pass the time. Also, with a friend there, he or she can load the rifle and give it to you to shoot. At odd times, the loader can load an empty case in the rifle to help you learn about twitches or flinches.)
You start by learning about slow breathing...squeeze on the exhale and pull so gradually that you don't really know when the round will go off; then work on the sight picture...seeing where the front sight is on the target and learning to focus on the front sight after you have alligned it to the target. You do this for every shot.
Then, just spend time...lazy, ain't -gotta -prove -nothin' time--first with the index cards, then over to the tin cans, then back to the index cards.
I start folks out at a 10 yard target (closer, sometimes) because I want them to hit. This is not proving failure, but reinforcing successes. Move the targets further after repeated successes, but don't go much beyond a 25 yard range at first.
Then blow up a few balloons, and let them sit in the range area. If you have a breeze, neat. If not, fine.
But the balloons are your reward for achievement. Set some reasonable goal, like 5 hits out of 10 on a card, then....you get to shoot a balloon.
When you have done your learning shooting for the day...say 100-200 rounds...bring out the ping pong balls, the golf balls and the paint-gun pellets.
You are now officially screwing around.
You will learn the gun, you will learn to shoot, and you will find a satisfaction in a learned skill that may stay with you a very long time.
When you have gone through those first bricks, you will be a shooter. The next steps are up to you. That old single shot is the cornerstone of any guns you may get and frankly, it just loves to be shot.
Be well and safe.
BTW, Spectre and Satori, Munk and Rusty, 45-70 and Raghorn...and bunches of others know a LOT more than I do. But my way works too.
Be well and safe.
(On old guns: I just looked up the serial # on my first gun, a Winchester 97 for which I paid $40 in er...the 60's...it was made in 1915 if I read the table correctly. Serial # 6044XX. It would be one of two to save from a fire, should I have to. Old guns are wonderful.)