Ars Technica has a big and very comprehensive Windows 7 review with lots of helpful references - 15 pages, lots and lots of details.

The Big Ars Technica Windows 7 Review

Ars Technica discusses the big MS Windows 7 product guide here, with many links.

Find the MS Windows 7 Product Guide here. This is a very comprehensive document on all things Windows 7 right from the creators.

The article also refers to the new(er) Microsoft Answers site, which has lots of Windows 7 info in a Q/A format. Find it here.

As a handy reference, there is the Microsoft Windows Solutions Center. Find it here.

ZDNet (the PC Magazine people) have an excellent “All About Windows 7″ portal with tons of great info on Windows 7. Find it here.