[plexiglas]

I suggest searching for documentaries on your favorite genre, whether it be Jazz, Rock, or Hip Hop. Jot down the artists/labels that pique your interest. Research those groups online.

In parallel, learning music is best when you're having fun. You should start with your favorite artists and dive deeper into their discography. Research the label they were on (fruitful if the label is independent). Look into their contemporaries. Who were those artists? Maybe they were associated with a larger movement/scene, and so on.

Finally, listen to more music! Everything (almost) is on Youtube or Spotify. Make it a point to listen to music everyday.