SketchUcation

SketchUcation is a reference site with videoclips where you can click any Tool, Panel or Menu Command and directly see what its function is in SketchUp. Next to referencing the Tools, Panels and Menu Commands, SketchUcation provides tutorials that cover a broad range of uses in generic modeling practices, teaching how to combine tools for more in-depth use of the software.

http://www.sketchucation.com/