Professions resources on the web

In this thread, we'll create a good old-fashioned pile of links to resources on the web that are specific to professions in World of Warcraft. As you make suggestions of great websites that fit that description, I'll return to this first post and add your links (so long at they are germane).

I'll start us off with these:

WoWhead Professions Guides
Alchemy
Blacksmithing
Enchanting
Engineering
Herbalism
Inscription
Jewelcrafting
Leatherworking
Mining
Skinning
Tailoring
-----
Archaeology
Cooking
First Aid
Fishing

Now it's your turn!

Please see source post at http://us.battle.net/forums/en/wow/topic/15255115429?page=2 for detail.