Pandaren hunters automatically know how to tame Cloud Serpents. Hunters of other races must learn the skill from the tome How to School Your Serpent, which may purchased from San Redscale at The Arboretum in The Jade Forest. You require Exalted standing with The Order of the Cloud Serpent to read this tome, but the learned skill is account-wide. You can even purchase and read this tome on a non-hunter character.
Location & Notes:
Located in Winterbough Glade, Vale of Eternal Blossoms. Appears in the Assaults phase of the zone, but only during Mogu Assaults, on days when the Serpent Binding event is up. Defeat the mogu restraining this cloud serpent in order to activate it.