This book definitely leans more towards the practice of cinematography than the art—there's much more talk of how the author blocked light out of a certain shot, for instance, than why he did so.
It does contain some interesting insights, which generally stick to the theme "breaking away from conventional standards of 'good photography,' like by over-exposing shots, can sometimes yield more interesting images." I found the chapter on The Warriors to be the most interesting in the book.
Sidenote: each chapter's followed by a largely useless Q+A. I have no idea why they chose to include these Q+A's, seemingly unedited, instead of just editing the chapters for clarity! They're full of gems like (paraphrased):
interviewer:
author: I already explained that in the chapter.
interviewer: You said you had 10K lighting units. What does the K stand for there?
author: Um, K means thousand. Ya dummy.