Im getting wow soon and im downloading the trial now, any tips on what to do/use.
Go Shadow priest
No idea , just do a random class and you might like it.
I went priest and loved it !
http://us.battle.net/wow/en/character/dark-iron/mikuria/advanced
My account there.
Also, start professions as soon as you can. To go further in that Alchemy and Herbalism fit well together as your two primary professions. (note you can only have two primary at a time) You also, have minor profession which are fishing , cooking , first aid and I think archeology. Get the battle chest I would recommend great bang for your buck but the guides in their a little outdated. They still say hunters have limited ammo
http://us.battle.net/wow/en/game/
Another link look under beginners guide and races too.