"World of Warcraft" is a fun game, but travelling from one place to another can be extremely time-consuming. To combat this problem, the game has transportation systems that allow you to travel to and from some of the major cities quickly. If you're Undead, you can get from Undercity to Orgrimmar by taking a zeppelin.
Find your way to the Undercity area. Undercity will be the nearest city to the Undead starting point. Go to the zeppelin port, which is north of the entrance to Undercity.
Climb the stairs of the zeppelin port and talk to the Zeppelin Master. The Zeppelin Master will tell you where the zeppelin is and where it will be going. The Orgrimmar zeppelin will leave from the landing to the west.
Get on the zeppelin to Orgrimmar once it arrives. Wait for it to leave. Once the zeppelin departs, it will quickly take you to Orgrimmar.
Get off the zeppelin and climb down the stairs. The zeppelin port is just to the east of the main gate of Orgrimmar.