Introducing Microsoft Office Packages
It's me Alison, again. I had the same thoughts (although for updating the OpenOffice tutorials) a few months back. I decided not to continue the CCNC structure (after some discussion with people who were in on it's beginnings), but rather to place updated tutorials in relation to the main OpenOffice page: OpenOffice/Calc 3. Not sure I'd do the same today. I think I might just create a main page called 'Calc Version 3' that would link to any relevant tutorials.
(Note that I added the version '3' onto the name, so that when version 4 comes out we can update the tutorials, but leave the version 3 ones active for people that haven't upgraded yet.)
Just some thoughts on the topic. Hope this helps.