I dont see a folder for helpful, strategic, or popular links for WoW so I'll start one up. (This would make a good sticky folder.)
Post your favorite links to WoW sites that can help noobs like me get a better grip on how to play.
Especially helpful are guides (profession, class, strategy). Build examples for classes. Instance guides and strategies. Macro and add-on sites where one can find the most l33t add-ons for daily use and raids.
Here's a few links I have:
Please feel free to constructively contribute so others on the PC can benefit from your knowledge!
Edited to add:
I'm especially interested in finding the best addon's for interface mods & layout.