Checkout http://www.mousesavers.com. Loads of good info. Also sign up for her monthly newsletter. In there is a link to site for discounted park tickets.

As for a hotel, if you can utilize points for BW, that would save quite a bit. But will you need to rent a car? That might make the savings not so great (rental plus parking). If they offer a shuttle, be sure to check the hours and frequency. Sometimes they only have a couple in the AM and a couple in the PM. Possibly before park actual closing.
A hotel you may want to look into is "The Hilton, located in the WALT DISNEY WORLD® Resort". It's located a crosswalk away from Downtown Disney. Staying here gives access to Extra Magic Hours, and frequent buses (every 30 minutes I think) to and from the parks, up to 1.5 hours after park closing. We got in there last summer with a MouseSavers rate of $75 per night.
Books/Guides: You can't go wrong with The Unofficial Guide (Bob Selinger). Almost too much information, but not quite. Downsized a little is PassPorter's Guide, but only physically. It holds plenty of good info. If your more of a computer person than a book person, check this out. http://www.guidetothemagic.com/
Dining: http://allearsnet.com/din/dining.htm What restaurants are were and their menus.
Remember, ADR's can be made 180 days in advance. Online or (407) WDW-DINE (939-3463)
For a list of upcoming shows, special events and performers at WDW, Steve Soars has all the info. http://pages.prodigy.net/stevesoares/
Disney Vacation Ultimate Packing List http://www.mousesavers.com/UltimatePackingList.doc
Pretty comprehensive.