Network+ Study Guide assisted me in passing Network+ with a score of 833/900. This book is strong in NT/2000 content, but lacking in Netware, Appletalk and Unix content. That said, the majority of the Network+ exam is devoted to NT/2000; nonetheless the Network+ tests are randomly generated and you may luck out with a Netware-heavy exam. Some sections contained errors in the review questions which were duplicated on the CD-ROM. However, careful readers will note the errors and learn from them. I recommend this book as a primary Network+ resource, and supplementing it with secondary materials.