MAP power-guru, James Murphy, posts reminders about nifty, undocumented commands in MAP on his blog, Mapping the World.
Also, for more Autocad Learning...
Ellen Finkelstein reminds us... You can buy AutoCAD 2007 and AutoCAD LT 2007 Bible at Amazon.com today or at your bookstore. The main new features are 3D -- and they're very exciting -- but there are lots of great 2D features, too. Buy it today! AutoCAD 2007 and AutoCAD LT 2007 Bible
Also, here's a new one that is definitely worth checking out...
AutoCAD and AutoCAD LT for Dummies, by Lee Ambrosius and David Byrnes
And, not to leave out the Architects in the house... there is an ADT Implementation Guide in the works from Paul Aubin and Matt Dillon.
Happy learning... especially to those of us lucky enough to be attending Autodesk University this fall/winter.