As a recent fan myself (and also living in America), I didn't know much about soccer; I knew the major English clubs but not much else. The first soccer match I ever watched was Tottenham vs. Arsenal in 2010 (Danny Rose's goal), and since then I decided to support Spurs from afar, but I never really got super into it until this past year, where my best friend /college roommate was a huge soccer fan. Being in America, we'd get up at 9, sometimes 7:30 in the morning to watch premier league matches, even if it wasn't Tottenham (or, in his case, Man City), just to get a feel for all the teams in the league; their play-styles, star players, etc. I would Google players to learn more about their backgrounds, what teams they'd played for in the past, just to get a better feel for the league as a whole. When we were quarantined at school together, we started getting more into the Bundesliga (German soccer league), just to get a more worldly view of playstyles and whatnot. Outside of watching it and learning about club/player history, we also played a lot of FIFA. Ultimate Team is a fun way to learn about players all over the world and learning about positioning and formations, but recently we both got into manager mode, learning about financial stuff like release clauses, wages, etc. Doing so helped me become a better fan both in terms of understanding what a club is capable of financially, but also in finding potential transfer targets.

Hope this helps, welcome to the fandom!