My first rifle was a scoped .22, I think a scope is needed if you intend to hunt small game.
But just for targets irons would be good to start, I find shooting with iron sights much more satisfying also.
When I use Irons I mainly shoot reactive targets, either cans filled with water or small steel targets I made.
I also prefer to try snap shooting or quick shooting, and usually offhand shooting.
I find unless I am shooting for groups, prone or off a bench is boring.
And practicing offhand made a huge difference for when I was hunting.