As with every Microsoft exam, a dozen publishers will be putting out training guides and study guides and exam prep guides and so many that your head will spin just looking at the bookshelf. Those books are all helpful in studying for a test, but much of the same material used in question creation overlaps content used in one of the most definitive book series that Microsoft Press releases for each operating system. This started with Windows 95 and has become truer with each successive operating system and Resource Kit release, climaxing with Windows 2000. (You almost had to have the Resource Killtest to pass the exams.)