I guess I'm tooting my own horn.
The eBook I was working on has been published by The Taunton Press. There's also a DVD which is designed to stand on its own but also adds some detail to the book. I've attached the Table of Contents as a PDF file.
SketchUp Guide for Woodworkers: Advanced Techniques, the eBook
SketchUp Guide for Woodworkers: Advanced Techniques, the DVD
And the basics video (they aren't eBooks)
SketchUp Guide for Woodworkers: The Basics, video download
SketchUp Guide for Woodworkers: The Basics, DVD
The book shows how to draw things like the legs on this table.
These flame finials.
And the legs and serpentine front on this small Sheraton-style table.
While you might not be interested in drawing these exact things, I would hope you'd be able to see how you can apply the methods for your own models.