well... I was tentative to buy this book and I was disappointed when I received it as I found the pages are full of texts!! However, When I started reading I came to recognise that it is amazing,,, Although it has descriptive style, it is great for starters.... When I learn new technology, I always find the configuration is the most difficult bit, this book provides step by step guidelines,,, and Also I find it is very useful when the author asks the questions come in my mind.... Another advantage, if you read a chapter depends on another chapter you skipped, the author will put you on the context so you do not need to go back again....
I'm still reading it and I strongly recommend this book