Ele shaman is really easy to understand too, Enh shaman is a bit harder because lots of spells and the gameplay is not intuitive, but you'll get used to it. Resto shaman is not that hard either.
I'd say feral might be a bit more complicated, but I didn't play Druid much.
But you shouldn't choose based on complexity. If you want a caster, go Mage or Ele Shaman, if you want a melee, go Enh shaman or feral.
With the way you write, roll anything until 55 then roll frost dk.
PvE is a minigame // Spreading rows of DoTs and no love on this forum // WoT : Playing the VK 30.02M / Tiger / Tiger II
i will go for druid! dk's aren't for me ^^ tnx for everything and i hope to meet you on ragnaros!