To move around on the map: use the tools in the upper left corner, or simply left click anywhere on the map and drag in the direction you'd like to move.
To zoom in or out: use the tools directly below the movement tools. (+) to zoom in or (-) to zoom out.
To change the map from a map image to a satelite image: click on the "Satellite" button at the top.
To change the map to a combination of satellite image and geographical names: click on the "Hybrid" button at the top.
To get directions to a business from anywhere: click on the "Powered by Google" name in the lower left corner.