The University of Michigan 3D Lab has produced a series of "How-To" videos that provide very clear instructions for operating a Cube 3D printer.
The quality of these videos is excellent.
The first video gives a very nice overview of the basics for getting started with the Cube 3D printer. A sidebar also provides an index to the entire series.
Video #1: About the Cube
As you finish each video, the next in the series will be loaded automatically. Nice.
While I could embed the videos here, I would much rather that you go to their uploaded videos or the University of Michigan 3D Lab directly so that they get full credit for their wonderful work.