Use the Layer Picker to turn on and off layers of information, remember to click Redraw (green arrows on toolbar below) to update the map when you're finished.
Zoom In
Zoom Out
Zoom Box (draw a box on the map)
Zoom Extent (show all of the South Hams)
Pan (drag mouse to move map)
Redraw (use after changing layers)
Information (get info on point clicked)
Find an Address