Google Mars is created through collaborations with NASA researchers at Arizona State University. Working with Google, they have created some detailed scientific maps of Mars. Google Mars works the same as Google maps, complete with landmarks and other features.
When you first launch Google Mars you see an Elevation view with bright colours indicating various altitudes. There is a convenient scale at the lower left of the screen.
Navigation is similar to Google Maps:
arrows on navigation bar
zoom slider on top left
mouse can select and drag areas of the map
mouse can zoom in or out
Other map views are:
Visible - landscape in grayscale
Infrared - mosaic of thermal images (colours highlight temperatures- warmer areas are bright and cooler areas dark)
In either of these views you can toggle between features like:
regions
spacecraft
mountains
canyons and craters
dunes, plains, and ridges
Pass your mouse over any feature and a description bubble will appear with details.
Google LatLong Blog
Learn more about using Google Map by reading the LatLong Blog.