In one sentence, describe what the following article is about:

Open up the drop-down Tools menu in the top toolbar of Google Earth. If you have an earlier version than v4.3, access the flight simulator by pressing Control+Alt+A, Control+A, or Command+Option+A then pressing enter. After this feature has been activated at least once, it appears under the tools menu. A small window should now open up. There are three parts to this: aircraft, start position and joystick.  Aircraft - Choose the airplane you would like to fly. The SR22 is a slower plane and easier for beginners while the F-16 is for more intermediate to expert users. In this guide, we are using the F-16 as an example. Start Position - You can either your current view, starting off from an airport of a major city or your last position on the flight simulator. Beginners should use the New York airport. Joystick - Check the box if you are using a joystick to control your airplane.   Since it is almost impossible to see the runways without aids, take every runway you might land at, and draw a path along the length of the runway. Make the runways of different colours and set the width to 5mm. The runways are very clearly visible in mid-air now. Turn on Borders/Labels and Transportation. Again, this is to help you navigate.

Summary:
Open the simulator. Establish your settings. At the bottom of the box click "Start Flight". Wait a few seconds for the map to load. Choose all the airports you will be landing at regularly. Open up the sidebar.