Move the map
You can move the map draging it.
Or use the arrow control in the left hand over the map.
Zoom in and zoom out
Use double click to zoom in and rigth mouse button double click to zoom out (control + double click on Macs).
Or, you can use the zoom control placed in the left hand of the map.
Olso, you can use scrooll whell to change the zoom, enabling this function with a clic in th checkbox under the map.