I found this book to be quite hard to follow through. In addition, he assumes too much and does not get into details. I found impossible to follow, if you are new to Linux administration. Furthermore, some of the examples do not work. He goes somehow deep into theory and not into practical working examples. Some sections are missing details, and overall, after installing your server, the book does not provide an easy-to-follow manual, or an specific introduction to Linux servers. I wish I could have read something like this, before I bought this book. To me, it is a complete waste of time and money. I understand that there are not too many books written on this subject, that really are worth while to buy; but, this follows into the category of "the crappy ones." I believe, that to write in a way that everyone understand, one has to understand that not everyone is born knowing everything, and if one writes a book is to provide with accurate information, at least. This is one of the worst, if not the worst, book I have ever had.