Originally Posted by RushDistance
In addition you can join random dungeons via your Dungeon Finder. I suggest to sign as an DD. You have enough time to do quests and after 10-20 minutes ( on every server different) you can do a dungeon.
I'd rather sign as an Tank, you'll find a party in a few seconds.
Tanking ain't that hard with a DK, you'll get used to it after a few instances.
Instance XP > Questing XP