Welcome to the server! If you’re interested in some good general information you can take a gander at Lindiwe’s thread (if you haven’t already).
In the popular links section at the bottom of the post are some pretty good related threads that people have contributed to that give some nice info for role playing and the like. I’m Alliance mainly so can’t help as much with Horde RP but I wish you tons of luck. WrA is a great server!