Free Nikon D3S and D3X Guides
Nikon Professional Services (NPS) have launched a new website and gone global. See earlier post on this:
http://www.dslrgossip.com/nikon-launches-nps-global-website/
Most of the site is open to public except for a few documents. And, there are these 2 guides that are free for you. Grab them while they are still available: