You wish to escape? That is fine, but you must know some things first.
Stay away from the trolls. They will not kill you, but they will trip you and bring you back here.
Speak with every raptor you see. Not only can they teach you new abilities, but they will help you remember your progress and make your path out of Zul'Gurub much easier.
You already have a Dash ability - use it to get out of tight spots.
Oh... and stay out of the water.
Patch 4.0.3a (2010-11-23): Added