Finding an music/artists you like and seeing who their influences are and checking them out may be one path. DJ's can cut through that even faster since they surface and reference more material.

There are also a lot of movies out there - Béla Fleck made a movie tracing the banjo back to africa Throw Down Your Heart, if your looking to chronological type stuff in America, Ken Burns did a series on American Jazz and Country music - https://www.pbs.org/kenburns, Muscle Shoals, Buena Vista Social Club, The Nu LatAm Sound may be of interest for non western movies

https://www.npr.org/sections/allsongs https://www.rollingstone.com/music/music-lists/500-greatest-... (take with a grain of salt)

so much music, so little time!