Initial two parts are just OK, but they consist of pretty basic descriptions that you could easily find on the web within 5 minutes. But what this book is really about is the 3rd part (nearly 1/3 of the book), which is a list of actual case studies - (3 or 4 if I remember correctly) - quite detailed, with full rationale, nice description of the approach, obstacles & the final effect. What is even more interesting, these cases are really very different, so you're getting an insight into truly varying scenarios.