The simulator is easy to fly, even for non-pilots. There are no complicated engine-start or takeoff procedures - simply add power (press the PAGE UP key) and off you go. Once you've found a nice vantage point, you can use the space bar to pause the simulator and enjoy the view for a moment. Then, keep your location constant while you look around using the CTRL and arrow keys. Flying is easiest with mouse controls (or a joystick if you have one), but the full set of keyboard controls gives you greater functionality.
Frank Taylor, author of the Google Earth Blog, has compiled a video with flying tips:
qv: Flying Tips