I believe it is more appropriate to cover Access 2010 in the same way it would be covered if you were teaching it from scratch.  A little bit to get your class going and then another little bit to build on it and so on, rather than a series of tutorials devoted to one subject, tables, queries, forms etc.  
It may be that doing it in the little bit at a time way makes it more difficult for the more experienced user to find the bit that he/she would like, but you do have a very comprehensive index to enable a search to find something particular, and it is surely more appropriate to address your tutorials to the beginner so that he/she does not go through a whole section unable to understand what it is all about.
I would therefore strongly urge you to stay with your present style and provide the comprehensive index.
Regards
David

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Reply from Richard Rost:

This has always been my thinking.