Welcome!
Not much different than most other "man hobbies". Hopefully you've enjoyed the process and learned from it.
IMO most ignore the room and pay the price. If you can't have a decent room (proper size, proportions, insulated, and dedicated) you're better off just casual listening in-room with a modest system and leave the serious listening to headphones. The price is living with frustration of over buying gear repeatedly that is a mismatch for your expectations.
Suggest reading Floyd Toole's "Sound Reproduction" the consummate audiophile guide to understanding how speakers/subwoofers behave in-room. In it you'll learn that every room has significant bass peaks/dips (up to 30 dB!) and that the answer is replacing full range speakers with monitors and carefully placed multiple subwoofers in a decent room. After that room treatments and maybe room correction may be in order. Recommend keeping big equipment racks to the side to allow the soundstage to fill the space between the monitors.
Next find an amp that matches up well with those monitors, or better yet buy active monitors (one channel of amplification per driver using a sophisticated low voltage crossover) where the manufacturer has specified a particular amp for each driver. Technically and sonically active monitors are vastly superior to passives. They also cost less overall and save on clutter. Unfortunately most audiophiles operate too much by hunter instincts (proving his manhood by bagging the big prize and having lots of trophies to show off).
Sources are up to you. But it's never been a better time to go digital. CD quality streaming is available for $20/month that provides access to millions of albums with no need for storage or backup and is completely portable (within interest range). Good quality streamers and DACs are available for cheap. And all-in-one boxes makes the technology pretty painless.
