Congrats on your new purchase!
I have an SR22 and an SR40c... almost identical in the breakdown, layout, and feel. Pretty much the same except for the kick and the size of the rounds. I have the .40 for home defense, but the .22 is cheap to shoot, and super fun.
Sterg, welcome to the forums. As a relatively new guy myself the only advice I can give you is to recognize that you're never going to find "the one perfect gun for all occasions and I'll never need another" so just reconcile yourself to the fact that you'll have several very shortly. With that, I'd say get the SR22 for a practice gun as it's cheap to feed (I love my MKIII for that) while working on the basics or just target shooting. I believe the layout and feel of everything is the same as all the others in the SR line (I could be wrong here) so it's easy to then pick up something in a 9mm or 40 (full size or compact) that feels familiar but has the punch to be a reasonable defense weapon. Of course, if all you've got is the 22 when the bad guy comes around, better to have that than just harsh language.
I have an SR22 and an SR40c... almost identical in the breakdown, layout, and feel. Pretty much the same except for the kick and the size of the rounds. I have the .40 for home defense, but the .22 is cheap to shoot, and super fun.