Getting around Honolulu, and Oahu in general, means orienting yourself to local directions. Visitors may be told to go makai (toward the sea) or mauka (toward the mountain); the famous Diamond Head crater is also an important landmark and reference for the east, and the town of Ewa stands in for the west.
The main public transport system is simply called TheBus, and serves Honolulu and most of Oahu. The most popular route runs between Waikiki and Ala Moana Center every 10 minutes.
The Waikiki Trolley is also a fun way to get around Honolulu, looping around about a dozen key locations approximatley every hour with commentary by the driver. Stops include Hilton Hawaiian Village, Iolani Palace, Wo Fat's in Chinatown, the State Capitol, King Kamehameha's Statue, the Mission House Museum, Aloha Tower, Honolulu Academy of Arts, Hawaii Maritime Museum, Ward Centre, Fisherman's Wharf, and Restaurant Row.
Taxis are also available, and are a good way to get around at night; they are locally regulated so fares are standard across all companies. Relying on taxis for all transport gets expensive quickly however.