For the best views of the town, its harbours, commercial docks, the other islands and the local shoreline to the south you need to visit Castle Cornet (see my "Things to Do" Tip). The castle walls, towers and gun emplacements offer a variety of panoramic views and even a few slightly unusual ones.
More pics on travelogues to follow.
Guernsey differs slightly from the UK in some of its driving laws, particularly the maximum speed limit which is 35 mph on main roads and 25 mph within the towns.
There are a few other rules specific to the Islands and you can access the local government's website regarding these by clicking HERE
This is one of the most useful tourist information centres I've ever come across. The range of freebie maps and leaflets pretty much preclude having to purchase anything. There's the general map of the island which is complete with all the main attractions highlighted along with all the roadways and the bus routes. There's a walker's map with all the footpaths, major and minor. There's leaflets for the historically-inclined, brochures for the beach bums and for the environmentally conscious there's the green guide.
Here you'll find the island's bus timetables, ferry and boat trip information, assistance with accommodation, advice on things to do and an event booking service. The building is a free WiFi zone and there's also a computer terminal for public use.
In addition to the freebies there's the usual postcards and souvenirs for sale and even a reasonably-priced Bureau de Change.
The office is located on the seafront, about 200 metres to your left as you leave the ferry terminal, and its opening hours vary according to the time of year. In summer it is open Monday to Saturday 9 am to 5 pm Mon to Sat and 9 am to 1 pm Sundays. The excellent website has all the further info you need, as well as PDF links to many of the maps and brochures - Guernsey Info Centre