Well it depends if you want to run instances or pvp @ 70,
world questing gives you heaps of pvp help, because you have a bounty on you and people do gang up just to take you dont and its good practice.
on the other hand running instances flat out will give you pve and healing tactics and help you learn as your levelling the best way todo things.
I did smgy until 33 - library until 36 - armory until 38 and cath until 40.
and i did the quests in theramore for a bit of a breakup one weekend.