Taking a trip to DW involves a lot more planning than visiting DLR, but there aren't any threads that will neatly summarize "everything you need to know about planning a trip to DW." Some links that will give an overview of DW and planning a vacation include:
-at the top of this page is a dark blue band with links such as "Theme Parks," "Resorts," "Dining," "Planning," etc with lots of information
allears is another very good site:
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http://allears.net/index.html
-many of the other forums here on the disboards deal with specific planning topics such as "Theme Parks Attractions and Strategies," "Disney Restaurants," "Disney Resorts," "Transportation," etc. Lots of info to be found in these forums.
-a few threads with some additional info and links:
An Intro to DW for DLR vets, although there have been changes since this was posted:
http://www.disboards.com/showthread.php?t=1332683
DLR for DW vets (since you're familiar with DLR this is helpful):
http://www.disboards.com/showthread.php?t=1162599
More links:
http://www.disboards.com/showthread.php?t=1520483