To Move the map around use the arrow buttons positioned at the top right of the map or drag the map of Reddish using your mouse. There are no limits to the map. You could go all the way to London if you like!
To Zoom the Map use the control in the top left corner of the map. You can Zoom in to a level at which you can see cars! Or Zoom our so that you can see the whole world!
You can also change the map to three viewing options. 'Map' is similar to a standard road map. 'Satellite' is an arial view. 'Hybrid' is an arial view with a road map layed over the top of it.