Leveling tips for death knights in Pandaria

By the time you read this, Mists of Pandaria should be out and playable in Europe (coming soon to the US), and there's probably even a few of you who will have hit level 81 or 82. With the new talent and specialization system, I expect figuring out how to level will be easier than ever, if only because it's a lot more difficult to go wrong. Still, there's a few recommendations to make that may help you hit level 90 just a bit faster, and we'll go ahead and dispense some of that advice today. Note that all advice here is for leveling only, and may not apply to end game dungeon running or raiding.