My personal opinion, which may not mean much.

For a 22 rifle, If it is just to get you used to shooting, get a bolt action.

Here is my reasoning. A semi-automatic can get you used to FAST follow up shots whereas a bolt makes you take your time. It makes you want to/need to make every shot count because it takes longer between shots. Whereas the semi auto is bang bang bang, as fast as you can pull the trigger.

You need to learn trigger control and ACCURACY first, before anything else.

My 2 cents. Hope it helps.