Everyone I know uses www.thottbot.com. After this www.wowwiki.com was born as a solution to Wikipedia deleting hundreds of hours of content. After this many other sites spawned. Some even more detail. You have to get the www.gathereraddon.com on there as Cosmos is currently wacked out on the new patch and it eats SO much of your memory that it even delays mob loot time. There are tons more links, but before I'm shot down in flames that's a good start if interested.
