Audacity Tips and Tutorials
Introduction to Audacity and Tutorials
http://audacity.sourceforge.net/manual-1.2/tutorials.html
Video tutorials on using audacity
www.how-to-podcast-tutorial.com/17-audacity-tutorial.htm
Another basic tutorial
http://curriculum.union.edu/tips/audacity.php
And another...
www.teachertube.com/view_video.php?viewkey=cb3860f2a6d4b38c6490