Hunting deer, turkey, squirrels? Shooting a gun?

I am trying to get more ethically sourced protein without paying a fortune. I've never shot a gun. Could anyone help outline the steps I would have to take to begin hunting? Is it difficult to shoot a gun accurately? Is there a gun shooting course you've taken/ how long is the process? Pretty much any info would be helpful 🙏
Or is there a different way to catch animals without too much distress? Like a trap? I will eat pretty much anything, squirrels, whatever

(Cleaning/butchering the animal won't be an issue for me, I have done so with pigs and chickens).

Hunting deer, turkey, squirrels? Shooting a gun?
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