I'll be cleaning up the Farmable Upgrades section to make it look pretty and include relevant notes like the mob, respawn times, and unique things like how to reach bloodmyst as horde. But the answer is that you need to take the portal from Teldrassil, located on the west dock. To get there, you need to cross the water from darkshore to teldrassil. You can get there solo without dying to fatigue by using a Riding Turtle or Sea Turtle mount (and maybe druid travel form). Other classes will probably die to fatigue, but should be able to get back to your body as a ghost walking on water and then finish the trip. Easiest is for another player to give you a ride or provide water walking.