mind = blown!

So i just learned a few key things to jazz.
1. The use of the harmonic minor scale and modes
2. the use of the blues scale
3. Chords are often used as support and arent the main focus in the songs
4. Drummers keep time on the hi hat or ride

I read in this book that jazz uses them, and i didnt really understand. I then learned them and started experimenting, and then i was able to hear it.