Well, followed tips to get to Dalaran.
explored it a bit, adn went to wintergrasp.
And i found an extremely easy way of grinding exp from 70-75ish
horde goes south down to the tower, then takes the safe roads to the 3 bridges. I like mid one the best since it has the most mobs.
Now all you have to do is help the warsong guards kill the alliance ones. the exp gained is determined by your damage done, so hit hard but try not to aggro off your tanks.
and simply profit
ps they have a fast respawn timer so make sure u stand behind your NPC tanks