If you are tired of the intro questchain, you can skip it.
While you are leveling, talk to Chromie and select "The Iron Horde".
You will get the quest
Warlords of Draenor: o Portal Negro to go and see Khadgar in Blasted Lands.
Go to Blasted Lands, but instead of turning the quest in to Khadgar you abandon it.
You can now just enter the Dark portal and you will be in Draenor.
Now just pic up the quest
Posição segura if you are Alliance or
O lar dos Lobo do Gelo if you are Horde and you will have your
Pedra de Regresso da Guarnição in a few minutes.