Google Earth (not Google Maps) is a really good tool for practicing navigation;
Better than that it has a built in flight simulator. Click on "Tools" and look for "Enter flight simulator" then choose between F-16 or SR22.
You can start from present view or a specified location and then use the mouse and a few simple keyboard commands. You will need to right click the mouse to get control in flight.
I've used it many times for pre-flight visualisation but the F-16 in the Grand Canyon is fun!