Use PCSX2. Follow the OP post here: forums.somethingawful.c… If you can’t find the bios files on your own, I can dig that up too.
I’m trying PCSX2 now, but I can’t look at that forum w/o registering…
Emulators that are trying to do anything past N64 tend to be finicky/ and or resource intensive; although I’ve heard Dolphin (Gamecube & Wii emulation) is pretty good. Older stuff like SNES and GameBoy is generally much easier to get working.
I have a decent amount of old N64 games and a working console that I no longer really want, a mostly working Xbox, and a bunch of GBA, DS, Gamecube, and Wii games you could borrow.
If you’re looking for free/cheap indie games for PC, I know quite of few of those as well.