WoW DPS for a Death Knight beginner?

When you go through the Death Knight starting area which levels you from 55 to 57-58, you will get as quest rewards the gear that you will probably still want to wear into your early 60's...You'll notice if you go to Hellfire Peninsula that almost all the DKs are geared exactly the same for that very reason, so gear is not gonna be your problem. For DPS you are gonna look for stamina, crit, attack power, and maybe agility.