Becoming exalted with Order of the Cloud Serpent will allow you to learn Cloud Serpent Riding and will reward you with three different cloud serpent mounts the moment you hit exalted. Their main quest hub is located at the The Aboretum in Jade Forest. Reputation is increased with them by completing daily quests and handing in Onyx Eggs (similar to the Netherwing rep grind back in BC). The eggs can be found scattered about near the area that the dailies are completed. They award +500 rep each.
Gaining reputation with the August Celestials is done through dailies. There are several different hubs located throughout Pandaria and the locations rotate on a daily basis. To find out which hub is open for dailies you can speak with the August Celestials Quartermaster for your faction: Sage Whiteheart (Alliance) located at the Shrine of Seven Stars, or Sage Lotusbloom (Horde) located at the Shrine of Two Moons.
Thankfully now that patch 5.1 is here both of these reputation grinds are a little quicker thanks to the Grand Commendations purchasable at revered.
|Reins of the Thundering Ruby Cloud Serpent|