Hi there!
For an introduction you could go to the Official SU blog, since I am the most recent "Featured Modeler" in this blog. I was watching an online video about the Sketchup Basecamp (I dream to be there once). In the speech this SketchUcation site was mentioned. I had been visiting it already but registrated only today.
I am a fanatic Geo-modeler but want to learn more about rendering and Ruby things as well.
For dutch SUpers: I have a weblog.
Thanks,
Dick Stada