A good survey of the higher level strategic concepts of Go, with a 2 or 3 examples from pro games each. This book is definitely more for introducing these concepts to kyu players rather than how to implement them in games. I found the problems left a lot to be desired. This might be due to strategic concepts being harder to turn into problems, or my kyu-ness not understanding well enough.
All in all, I think it's a good book, but I'm glad I bought it from gobooks.com and didn't pay full retail for a print edition.