Time to investigate 'Bitches Brew'

"BITCHES BREW" has always been about 10 years ahead of my time.
I thrive on the music MILES DAVIS made about a decade or so before this revolutionary JAZZ-ROCK hybrid, so although I own the 1969 album, I haven't really spent much time fully investigating it and the myriad sounds it contains.
I've reached the chapter on "Bitches Brew" in RICHARD COOK'S comprehensive biographical discography "IT'S ABOUT THAT TIME: MILES DAVIS ON AND OFF RECORD," so I am going to closely listen to the album the next couple of days.
Davis knew he would leave some of his old fans behind when he radically changed his approach to music.
I want to find out what I missed he left me standing.