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This is a solid answer, but I'd also add - there are very few general music buffs. Maybe I'd count, with years in pro music performance, degree in Jazz and a lifetime of listing to and performing an insanely wide variety of genres... but not a buff for all styles. Computer systems are actually not a bad analogy. How many people do you know that have an in-depth knowledge of Assembly in different systems (including the oldest ones), GPUs, ML, Python, JS, Haskell, C++, Rust, ALGOL, Compilers, Hardware development, etc. Then add into the mix having an in-depth knowledge of the creators of those things, what else they did, failures, influences, their mentors. You always have the choice of breadth versus depth, within your time constraints. I think learning about a single artist or band, looking up the producer, label, members and following up on all those leads to see what else they have done - and see if you like it is a great beginning. Some genres like jazz might seem difficult to get into, and that's fine. No need to delve in until you find a hook that peaks your interest. And then when you find out about a genre (and jazz is an excellent example) - you'll find sub-genres you like, and don't and maybe you are interested in the evolution - like many people love bebop, but don't listen to "dixieland jazz" or big band swing, or modern fusion. You will never hear all the music. But depth (in my opinion) breads a lot more passion than breadth just for the sake of it. So rather tha