Basic Information from Blizzard regarding Dwarves:
The stoic dwarves of Ironforge are an ancient race of robust humanoids who live beneath the snow-capped mountains of Khaz Modan. The Dwarves have always been fast allies with the Humans, and they revel in the prospects of battle and storytelling alike. In past ages, the Dwarves rarely left the safety of their mountain fortresses. However, whenever the call to battle sounded, they rose up to defend their friends and allies with unmatched courage and valor. Due to a recent discovery that uncovered fragments of their ancient origins, the Dwarves have undergone a remarkable transformation. The discovery convinced the Dwarves that the mighty Titans created them from stone when the world was young. They feel that their destiny is now to search the world over for more signs and proof of their enchanted heritage and to rediscover the Titans' hidden legacies. To this end, the Dwarves have sent out their Prospectors to all ends of the world in the hopes of discovering new insight into their shrouded past. These journeys led to Dwarven excavation sites all over the known world, some of which serve as outposts and some of which serve as potential hunting grounds for enemies of the Dwarven race.
Start Location: Anvil Marr, Dun Morogh
Home City: Ironforge
Available Classes: Hunter, Warrior, Paladin, Priest, Rogue
The TenTonHammer take on Dwarves
What's cooler then being a dwarf? The little people of the Alliance have paid their dues by producing some of the finest weapons of war that can be found. The Dwarves of Ironforge have themselves constructed one of the most intricate cities in the known WoW world.
Being a dwarf allows you to start in the Dun Morogh area where you can quest around the open snow fields and forests the area has to offer. Just remember that Ironforge and the Deeprun Tram are only seconds away.
Links to information on other WoW sites
Blizzard WoW site - The official Blizzard WoW Dwarf information page.