I'm listening to the audio version and am several chapters in so far and would give it a definite thumbs up. There's little you couldn't divine from a lot of the articles online from those involved and interviewed, but having it all in one place wrapped up in a system of sorts is inspirational and more likely to get you using the good stuff.

(If I had any complaint, it's that the way you get the audiobook version is weird. I'd rather it were on Audible.)