Feel free to reuse information developed for and shared in my classes, see: Class hand-outs.
Microsoft offers terrific free video tutorials for their products in the Office 2003, Office 2007, and Office 2010 packages. Downloadable practice files, checkpoint knowledge quizzes, and Quick Reference cards for the topic are often included. The Microsoft site is rather difficult to manage so here is the direct link to the...
As of April 25, 2011, Office 2010 Home & Student version for $69 was available from Software.
Consider this book if you want to get certified.