The Trade District is just inside Stormwind City from the main gate. It is the place in the city where you can get most goods. The Guild Master is to the left in the Visitors Center when you come in and can help you make a guild or a guild tabard. The goods that are sold in the Trade District are cheese, arcane goods and reagents, general goods, flowers, cloth/leather/mail armor, bows, guns, and clothes. The bank and inn are on the southwest side of the Trade District. The Gryphon Master is up a ramp on the east side. Patch 1.9 added the linked Auction House in the center of the Trade District.