I was fortunate enough to have spent a week at Sonoma Zen Center about 10 years ago. Kwong-Roshi impressed me then and continues to impress me more as time goes by.
That being said, if you are looking more for a theoretical treatise or historical prospective, I would point you elsewhere (Alan Watts - The Way of Zen is where I started and would recommend)
However, if you have spent time with Kwong-Roshi in the past, or are more interested in 'feeling' as opposed to intellect understanding, this is very good, and very Zen.
Kwong-Roshi is at all times is the embodiment of equanimity, and his very human stories, are both calming and full of humor.
The very title "Breath Sweeps Mind" has been an amazingly useful image (and what led me to purchase it).
Many teachers and books tell you to concentrate on your breath, and refocus every time your mind wanders off. This method can work, but it gave me headaches, and while I did manage it eventually, it was more of an ordeal than it was worth.
But now, we have a wonderful image of "Breath Sweeps Mind" and instead of CONCENTRATING :(, I imaging the breath blowing through the open window of my mind, sweeping out the 'thought leaves'. What a difference! How relaxing!
If your looking for the perfect Morning Cup of Zen, look no further.