170 pages of IntraWeb Documentation
It is not excuse for our own lack of up to date documentation, however Bob Swart has produced an excellent book about IntraWeb development and it is currently 170 pages. You can get it in electronic or paper back form. The electronic form comes with updates.
The book is written with Delphi 2007 in the title, but the book is useful for IntraWeb users using any edition of Delphi. Bob just used Delphi 2007 for the screen shots, but even if you are at Delphi 5 this book will be useful.