Drag while holding the right mouse button to look around
Hold [Shift] while looking around to move the view up, down, left or right
Press a/A to adjust the simulation speed
Press x/X to zoom in and out
Find frequencies of nearby ATC services from the Radios dialog
Press v to change your viewpoint, Ctrl-V to return to the cockpit
Press F3 to take a screenshot
Join the FlightGear community at http://forum.flightgear.org
Press h to bring up a Heads Up Display
Hide the menu bar by pressing F10
Frame-rate too low? - try disabling AI traffic
Select Environment->Weather to fly in different weather
Press F12 to change the radio frequencies easily
Look around by holding down the right mouse button and moving the mouse
Select Multiplayer->Multiplayer Settings to join the shared flight environment
Can't get the engine started? - see Help->Aircraft Checklists
Drag while holding the middle and right mouse buttons to move the viewpoint
Press / to explore the internals of the simulator
Press Tab to move the viewpoint with your mouse and use the scroll wheel to zoom