To use Google maps you need to be able to drag the cursor to move it around the page. Since you can't do this on the Kindle, we've modified the script so that it is operated by individual buttons.
Use the '++' button to zoom in a long way, or the '+' to zoom in by one level. Use the '—' and '-' buttons in the same way.
Shift up, down, left or right by using the arrow keys.
You can even change the view between normal, satellite, hybrid or physical depending upon how you would like to view the map.