Just a heads up for those that want to skip the WoD intro quests and start right at the garrison intro. There is a guide on wowhead explaining it in detail but you basically get the WoD quest from Chromie, go to the dark portal but do not talk to Khadgar, stand near the portal and drop all of your quests to empty your quest log, then walk through. From there you can start the garrison, or skip that and just fly to one of the quest hubs.