In terms of practicality, this is a fantastic book. Don't wait - read it and start applying the author's techniques, if you want to improve your running efficiency, reduce susceptibility to injury, and/or just make running (more) fun (again).
I approached this book with some skepticism (and I'm sure that I will repeat that sentiment in many reviews of other books). I mean "Chi"? Really? I felt I might be too analytical, and maybe not cool or hippie enough to appreciate this book, given the title. Thankfully, my attitude was misplaced. I have actually been able to transform my running (and to some extent, other parts of my life/self) thanks to this book. I will admit that I am in the 'honeymoon phase' with the techniques, but the difference I feel is unmistakable. If somehow I end up feeling very differently about it after a few more months, you'll see a revised/new, lower-star review (and probably many more such reviews from other readers). However, I seriously doubt that anyone who succeeds at internalizing the Chi Running techniques will be anything less than happy.
Pros:
-Most of the basic concepts and techniques are easy to grasp and apply.
-The techniques work!!!
-The author's writing style is easy to read. Positive but not (terribly) cheesy, accessible, easygoing, encouraging, honest, specific but not daunting.
-The book makes me want to meet its author! He just seems like such a nice guy, and one who could be invaluable as a coach/mentor type influence.
Cons:
-For me, there are a few too many spots (more toward the end, or I was just tired of the cumulative effect by then) where the author gets away from more accessible cues and falls more into a semi-metaphysical, spiritual kind of lane. It's not that I don't appreciate some of that; I really do. However, I find it more powerful to guide the reader to that space and let them have their own Zen moment or whatever. That, and I am just more of a practical person I guess. Maybe I didn't wholly appreciate the Chi Living angle at the end of the book. I'm sure other people love that.
-Not sure if this is truly a negative, but my goodness does he ever repeat himself a lot. I mean, I get the idea of hammering an idea home. At some point, he's just answering every possible question with the same few answers. Yes, that's part of the point, but it's occasionally annoying and starts to lose effectiveness after a while.
By an overwhelming margin, this is a very useful book. Do yourself a favor and read it, live it, and share with people you care about.