Still looking around but you're likely going to get many posts/answers with links to long standing popular resources. Standing advice to RTFM - and provide a well marked up and documented list of the recourses may allow for more considered questions/answers than many people linking to threads or articles on other sites.
I know I've already in my contributing for less than an hour, linked to mmo-champion, rawr, wow insider and almost linked maxdps and elitest-jerks.
I'm trying to come up with any suggestions for you that would make this the go to place over all the other places one can ask and research wow info.
And I really wish I'd linked my unregistered post/user to this one correctly.