To avoid picking up bad habits you might want to have them go through this document
http://home.pct.edu/~jmather/AU2006/MA13-3%20Mather.pdf
I will be posting an update for 2008 in about a month.
The students who gung-ho might want to try tackling these tutorials
http://home.pct.edu/~jmather/content..._tutorials.htm