Ask HN: How good is the Bootstrapping Design book?

I saw a posting on the Bootstrapping Design book(http://www.bootstrappingdesign.com/) few weeks on ago on HN and subscribed to their mail list. Now that the book is ready and its beta version is available for purchase for $39, I would like to know if it is worth the money. Also if you can recommend other books on design that is worth looking into. I am not interested in mastering design per se, but at-least develop a minimal level of understanding to help me interact with designers.