If you are just starting to learn how to use ADT, this is not the book for you. The author assumes you already know how to use many of the commands during the first exercise. The directions for each exercise are very vague and difficult to follow. His directions are so bad, that I have been stuck on the first exercise for hours. I will definitely be returning this book. It was a big waste of money.If you want to get a good beginner book, try David Frey's "AutoCAD 2005 No Experience Required". This book is more geared towards AutoCAD than ADT, but you will get a solid understanding of 2D and 3D commands. There are also excellent chapters on setting up layouts and printing. This book may be difficult to follow in ADT, since the menus in AutoCAD are a little different. I recommend that you load the AutoCAD menus into ADT to complete the assignments in this book. This may be a difficult task, but it can be done by using the "Menuload" command.