Google SketchUp for Site Design:
A Guide to Modeling Site Plans, Terrain and Architecture.
By Daniel Tal
Published by Wiley & Sons.
This is the resource page for the book
You can find links to models, plug-ins and AutoCAD
files that are part of the books tutorials.
There are many other resources available, so please
browse.
Please note: The book was written
for SketchUp 7.
The book and associated models
are fully compatible with SketchUp 7