I'm not sure if it belongs this here, but if you feel it doesn't just please remove it. I'm looking for a good source of exercises in excel that is good in teaching a friend of mine that wants to learn excel. I want the exercises to be similar in the school/university. I will just have to spend some time teaching him.
The following link is dedicated to teaching people how to use Excel in whatever mode they want to learn in. (intermediate, expert, etc) http://www.abacustraining.biz/ExcelExercises.htm