ADT Book Recommendations
If you're using ADT 2005, I recommend his most current works:
"Mastering Autodesk Architectural Desktop 2005" - an excellent resource for the day-to-day use of the product.
"Mastering VIZ Render for Autodesk ADT Users" - co-authored with James Smell, of Autodesk, this is a must for anyone who wants to fully understand how to use ADT with the built-in rendering application that comes with it.
You can purchase Paul's books at Amazon.com, however, since I've shamelessly plugged my friend's works, let me also ask you to to go his website to get to Amazon, as he will get a very small commission off of your visit.
Watch for more updates of his work soon!