RE: SketchUp Forum Guidelines, Keep It Tidy, …
I’m changing the topic to be about your first question and adding a few filtering tags.
(The 2nd Q you can start a new topic in the Extensions category.)
Regarding the third, there are many already started topics:
A quick search reveals these topics:
Search:
http://forums.sketchup.com/search?q=render
http://forums.sketchup.com/search?q=renderer
http://forums.sketchup.com/search?q=rendering