After getting some classes... go buy...
357 revolver with 4 inch barrel - simple, reliable, effective, fires good variety of common ammo. Get it in stainless and you are even better off.
Other choice is a Remington 870 shotgun, common, reliable, lots of accessories, inexpensive, used by Police and has large following.
Both, even in today’s hysteria should cost a fairly low relative price. $600 for the revolver, and $320 for the shotgun.
Happy shooting. Don’t forget to get plenty of ammo.
I completely agree with the .357 revolver and 12ga pump to start. After that, add to the starting lineup: a semi-auto rifle (self-defense) and a scoped bolt-action .308 or some such (hunting). Then, add a .22 of some sort for small game and inexpensive practice. Anything after that is gettng redundant.