I'm looking for advanced jazz books. How is Barnaby Dickinson's etude book?

Idk I bet it's good... his videos are very good. I just bought bobs doodle studies. It's good but once you start on it you kinda have an ah ha moment where you realize how it all works, but the book is a great practice tool. Da tal lah tal lah ta da and ah when crossing partials downward etc... It is nice to have a book set in stone per say