Targeted information is useful, but sometimes you just need to see the big picture. These are the tried-and-true best sites for broad-based WDW information--both official and unofficial. These resources are particularly useful for those who haven't been before and aren't sure what to expect.
For a more narrow focus and more detailed information, be sure to visit the Friends and Family, Couples, and Business and Solo sections of this website.
Known amongst die-hard WDW fans as one of the best and most reliable unofficial site for news, information, and trip planning. Deb Wills, the site’s administrator, is a guru in the field.
The official Disney World website. Always a good place to start.