Hi MDM7095, and welcome to cruise-chat.com!
We've been to Bermuda several times, and the best bargain is the combination bus/ferry pass. Our last time there (2006), we bought a 3-day pass and used it to get everywhere. There are both ferries and buses that service the King's Wharf area.
As for what to see, what types of excursions interest you? Bermuda has everything from Beaches (take the #7 bus), history (wonderful museum right at King's Wharf), golf, and nature (Aquarium, as one example).