If Orgrimmar is the Horde capital, is Las Vegas the who... nevermind.
We begin a new series of quick takes on World of Warcraft's most popular, most travelled cities and regions today with a veritable tour guide for Orgrimmar, if you will. A little bit of the city's history, how each of the Horde races can get to Orgrimmar from their starting areas, an easy-to-read map (no little numbers), and a quest listing for the city, sorted by level. It's all here!
A much easier way to find your way around town is to talk with the guards, the Orgrimmar Grunts. They'll mark many popular locations right on your minimap and full map, and point you the way. However, note the reagent vendor and orcish mount (wolf) vendor. These are two sought-after locations that you can't ascertain from a guard. (Troll mounts can be found at Sen'jin Village in southern Durotar.)
Don't look like a noob in general chat - check TenTonHammer's Orgrimmar city guide