New jobs do not start at level 1

[AzraelX]

So would u guys recommend getting a tank class to level 30 to then become a DARK knight or any class at level 30 would be fine. thinking of going paladin as well. but i don't know if i want to play as two tanks

[LineageRazor]

So would u guys recommend getting a tank class to level 30 to then become a DARK knight or any class at level 30 would be fine. thinking of going paladin as well. but i don't know if i want to play as two tanks

If the new jobs really are going to start at level 30 and you've never played a tanking class before, it certainly wouldn't hurt to level PLD or WAR just to get a feel for how tanks operate in general. Things like how much enmity is sufficient to keep a group's attention off the healer, handling the delay that mobs have before they'll follow you to a new position when you're trying to pile them all together, what to do about ranged enemies that keep their distance while you're trying to group them - that kind of thing. This isn't information you can learn just by looking at your list of skills; you pretty much have to be in the thick of things. You might be able to pick up a few things by watching a tank as a healer or DPS, but I honestly don't know if that would be sufficient.

There's quite a lot a tank learns from level 1 through 30 that these theoretical start-at-level-30 Dark Knights won't have. As others have mentioned, I shudder to think what partying with a fresh Dark Knight in Haukke Manor would be like, if that DRK had never touched a tank before!