It is in Eastern Plaguelands in Plaguewood on your way to Stratholme,you will need 5 Arcane Crystals,2 Nexus Crystals,1 Righteous Orb,and a fee of 60g at Honored rep.For Revered you need 2 Arcane Crystals and 1 Nexus Crystal.Lastly for Exalted nothing just accept and turn in you're attuned.