There are some fantastic guides out there, take a look around.This is a selection of my favourite go-to guides.
A very comprehensive list of transmog sets which includes locations. http://www.wowroleplaygear.com/
These podcasts are my favourite, I try to catch up with them as soon as they are updated. Have a listen
Behind The Avatar http://behindtheavatar.com/
Girls Gone WoW http://girlsgonewow.net/
Lagging Balls https://laggingballs.com/
Tauren Think Tank http://taurenthinktank.com/
The Training Dummies http://www.thetrainingdummies.com/category/podcast/