Here are some gathered resources around the internet to help those of you are looking to get into transmog, are already into it and looking for that perfect piece to finish a set, or looking to show off your creations!
Rules and Limitations - What is and isn’t allowed and info on the costs involved and how to do it.
WoWhead.com - Every item ever, how to get it, who it drops from, and what else looks like it.
Mogit - An addon that allows you to look up, model, match, preview, and wishlist items IN game. A definite must for any ‘mogger out there.
World of Wardrobes
WoW Roleplay Gear
Glow Weapons: List of weapons that will override weapon enchants (such as power torrent) and thus hide them for transmog!
Hunter Transmog Resources
The WoW Factor: The only community, multi-server transmog event of it’s kind (currently), with several sponsers, they go from server to server, faction to faction, holding transmog fashion contests for gold! A lot of fun, but the events run for several hours!