Craig Zacker is a fantastic technical writer. He presents his materials in a clear, concise and straightforward manner. He wrote two different text books for this course, this one and also the Microsoft Official Academic Course: Planning And Maintaining A Microsoft Windows Server 2003 Network Infrastructure (70-293) (Academic Learning). I actually used both to prepare for this exam. I left my program at school early to take a job. This is the second course that I have completed in self-study. Zacker's books were a great asset. This book goes into much greater depth and has more exercises than the other book by Zacker for the same exam. This book is intended for use if you're already in IT and are preparing for the exam. One of the great advantages of this series is that the self study method is much cheaper and you can work at your own pace. Zacker is an excellent writer and a clear communicator. His books are always a pleasure to read and a joy to use.