Just pick a team to follow based on region/vibes, tada, you are now a "fan" and just by trying to figure out how to stream/watch/listen to the games every week you will learn quite a bit about the players, rivalries, etc. — not just of your chosen team but all of the others as well. I was able to level up from total naïf to "bro-ing down with randos at the Towne Pub" within like 2 years
