The Catalina Island Chamber of Commerce and Visitors Bureau, 1 Green Pleasure Pier, Avalon, CA 90704 (310/510-1520; www.catalinachamber.com), located on the Green Pleasure Pier, distributes brochures and information on island activities, hotels, and transportation.
The picturesque town of Avalon is both the port of entry for the island and the island's only city. From the ferry dock, you can wander along Crescent Avenue, the main road along the beachfront, and easily explore adjacent side streets.
Northwest of Avalon is the much smaller village of Two Harbors, accessible by boat or shuttle bus. Its twin bays are favored by pleasure yachts from L.A.'s various marinas, so there's more camaraderie and a less touristy ambience.