At one time there were some reviews here that detailed some of the many errors in this book. The errors were both technical (some were typos, but some where just incorrect information) and errors in grammar. Most errors in grammar are easily ignored, but there are so many in this book that they became a distraction to studying the material. However, the technical errors are much more likely to cause problems if you are using this book to study for the Server+ exam. Especially, the errors in the question and answer parts of the book (and there are many).