ADT Braindumps
Chris has posted links to all the Architectural Desktop Brain Dumps on his Between the Walls Blog. This collection of articles dates from ADT1 to current and is an excellent resource for anyone working with ADT. Although some concepts are no longer relevant the older braindumps have some interesting background information on the challenges faced when ADT was created and how the product we see today evolved.
Between the Walls ~ Architectural Desktop Brain Dump Collection