As Remus said, all these (and more) video tutorials have already been linked to the sticky in the Newbie forum.
Yet anyone who finds new resources of SU tutorials or help pages, please, let us know and we'll add them to our "link database" there.

Ah yeah, and I also have Aidan Chopra's "SketchUp for Dummies". Excellent book for a beginner and is supported by his video tuts mentioned above.