Could someone help figure out a setup?

Hopefully it's okay to ask for help here

I'm very new to computer audio, but since I work on my computer 11 hours a day minimum, I'd like a system finally. Definitely looking for some deep, loud bass, but not looking to go insane with it. I'm thinking maybe $650 max for everything, but I'm also not sure where to begin, simply because many of the higher end speakers I'm finding don't plug directly into my computer (hence why I am reaching out).

If anything, I'd go with some speakers first and get a sub later with a different savings amount, so if I really HAVE TO go above $650, then I guess I'll have to.

What information would be needed from me to help determine what would be best?