Robbie,
http://h30187.www3.hp.com/campus.jsp?campu...8eddffd431b9eee
http://www.surf22.com/intro.htm
http://www.learnmarketing.net/
I don't know anything about these sites or courses, I just did a Google search for "free marketing classes online" .
Let me know if any of them are useful.
Good luck!
Mrs. C 
