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Tech Training Wheels
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Tech Training Wheels is a great site created by a group of Google Certified Teachers. They have created some excellent tutorial videos on topics like embedding videos in a Google site, Managing navigation of a Google site, using Sketchup and documents, among others.
They have a community part set up on the site and encourage users to upload their own tutorials.
It is a great site for newbies or even experts to find new tips and ideas.