I started with Ellington, Armstrong, Rollins and Gillespie in the late '50s. Then I went to Down Beat (it was very worthwhile then) and bought books. Trial and error with record purchases was my most faithful guide.
Unfortunately, "commercial" sites with bbs get much more attention than I consider "healthy". Note when the BNBB started dissing BN product, the board went away.
"What's available on the net" is a very poor guide to an education.