The primary goal of this book is to provide Exchange 2003 users with a series of lessons that provide information and examples of the procedures that are most important to Exchange administrators and power users. Each lesson is designed to take about 10 minutes to read. The lessons are based on my experiences, in house and out in the field, supporting Exchange organizations of all sizes. Those experiences helped me determine what features and topics would be most useful to a broad audience. I also used feedback from end-user training participants and instructors of administrator training classes to further fine-tune the lessons.