Excellent reference for learning & understanding Lion Server. You can pass Apple's Lion Server Certification Exam by studying this book.
This book is designed in a really great, easy-to-understand methodology that really drills home the lessons into your brain.
Each chapter contains the following:
1. An explanation of everything you need to know on that particular topic -- in a clear, easily understandable manner. It really felt like the author was having a conversation with you, talking in plain English and holding you by the hand throughout the entire process. It was really just excellent. Advanced topics being presented to you in the simplest way possible.
2. A step-by-step walkthrough for you to apply what you've learned on your very own Mac running Lion Server. Just follow along with the steps and you'll get the desired results on your Mac.
3. A Q&A section at the end of each chapter to quiz you on what you've learned.
Thanks to this methodology, this book really helped me understand the main topic I needed help with, which was file sharing in Lion Server (including permissions, inheritance of permissions, and propagating permissions).
If I had one minor suggestion for the book, I would like even MORE screenshots added to the book. There actually were already a plethora of screenshots, but I was trying to learn Lion Server without easy access to my own Mac running Lion Server on it, so I was heavily dependent upon the screenshots to teach me what I needed to know. It would have been even easier for me if I had more screenshots, but if you have easy access to your own Lion Server, the included screenshots will be more than enough for you.