Personally, I would prefer a book. They range from simple to advanced, and from 100 to 1000 pages. Buy one or find one in the public library.
Better start with asking yourself which parts of MS Office you want to learn. Choose one or more from (2007 edition):
Sharepoint Designer 2007 (not really for private persons)
Then ask yourself what version of the product you want to learn. The user interface of the 2007 version is totally different from earlier versions, and it's far better to learn the program you're going to use and not another.
Then ask yourself what level of expertise you want to reach. Ranges from beginner via advanced to programming in VBA.
When you know all of this, try to use a google search for tutorial or introduction for a product, like excel tutorial. Most, however, won't be for the 2007 version yet.
Hope this helps.
Is there a good place to learn microsoft office online?
im interested in some type of online class or instructions.