I originally used Autocad 13, a much earlier edition. To
read the current 2009 edition has been an extraordinary
learning experience. Everything is explained clearly and
simply. The layout is great and it is organized to provide a
straightforward understanding of the topics. The 3D modeling
chapters are particularly useful in these days and time, and
would be of invaluable help even for old-timers, that have
long resisted Autocad drawings in professional practice. My
only con would be that advanced sections could be more
detailed. I highly recommend this book, that demystifies and
simplifies the use of Autocad. It is very valuable to the
experienced as well as the new user of Autocad, a pleasure to
read and learn.