Ellen Finkelstein has been using, teaching, and writing about AutoCAD since 1986. Besides writing books on AutoCAD, she writes a monthly article for Autodesk's newsletter that goes to more than 100,000 readers each month. She has written numerous AutoCAD articles for other publications. Ellen maintains a Web site, www.ellenfinkelstein.com, that has information and tips on AutoCAD. She has created on-line courses for Autodesk as well. As a result of her activities, she is very well known in the computer-aided design (CAD) community.