While this is a decent introductory book, I don't think I'm cut out for Zen. I use several forms of meditation, sitting, standing, and walking, and none are as proscriptive as the methods described here. That said, if you're interested in Zen, this is probably a helful tool for you to decide if it's right for you. It's also a reasonably quick read.
I found thisbook to be a mix of useful information and dull passages that didn't add to my understanding. The writing is a bit wordy, which occasionally obscures clarity, but there are also some spectacularly illustrative metaphors.
Pros:
In some sections, explanations are really clear, allowing the reader to understand both the process and the reason behind it.
This includes some different definfitions for "zen" and "mindfulness" than I've previously encountered. While I'm not saying one definition is more accurate than another, it's interesting to explore the etymology a bit.
Cons:
Some of the arbitrary seeming information is left unexplained, when it would be really helpful to have the reason, making it oddly dogmatic. For example, when practicing sitting meditation, or zazen, why must the hands be just so? The athor spent two pages explaining the proper positioning of the hands, but not why it matters.
Some sections are far longer than they need to be, and turn out to be somewhat contradictory. We get 17 pages of detail on the correct way to sit, and eventually we're told not to worry to much about our sitting posture. When I first started meditiating, I would have found the posture alone too daunting to get past.
There are two pages on proper breathing and counting (which turns out to just be an aid, and not a useful one for everyone), but then failed to explain the difference between "following the breath" and "the idea of following the breath." As this is an area where I got hung up for a while in my own practice, this would be beneficial to readers.
I expect that many American readers will give up at chapter 5. In our fast-paced society it is really hard for people to commit to 20-40 minutes to try something new. I like the approach that some modern meditation books use, guiding readers through an easing in period so they are less likely to quit before they start and are more likely to stick with it even if it isn't working well at first.