[Dissonant]

guess it depends on horde or alliance. but the fastest way is to use all your money from your lvl 70 and pump it into your new toon. so you dont have to waste time farming anything and can just grind grind grind. You want to make sure that you are doing all the quests you can when you are going to a certain area so you dont waste time running back and forth. theres a ton of powerleveling guides out there, but Ive never really read any of them.. best is to use your experience and just keep grinding them quests.