Links

For Auction Data:

http://wow.allakhazam.com/

I rely heavily on the data from Allakhazam to set prices for my auctions. Until recently, Kirin Tor was in boom, so I added some on to the median price found here. Lately, prices seem to be tapering down. I like the data better than that found with WowHead, and it's far superior to Thottbot for accuracy. It can run slow at peak times.

For Instance Information:

http://www.wowwiki.com/

WoWWiki tends to have exhaustive information and good strategy for bosses. As a collective project, it contains a wealth of information on dozens of things in World of Warcraft. On the downside, it tends to be rather out of date.

For Item Data:

http://www.wowhead.com

Wowhead has a beautiful rich item database that's often easier to use than the Armoury. The Armoury's find an upgrade feature can't be beat when you can get it to cooperate, however. I also use Wowhead from time to time for quest information.

For Leveling Fishing:

http://www.elsanglin.com/

Beautiful, helpful maps with wonderfully done instructions make this my go to guide. As everyone knows, when there's extra time, Conañ loves to fish!

For Leveling First Aid:

http://wow.thenoobschool.com/wow-first-aid-guide-1-375

A precise table makes this the winning guide.

For Tanking:

Tankspot

http://www.tankspot.com