Basic help resources on FlightGear:
The Complete User's Guide (PDF)
FlightGear Flight School (PDF)
Short reference including key codes (also available as PDF)
Guide to joystick and keyboard configuration
Information for power users:
Guide for the Local Weather Package
Getting more help:
Additional documentation can be found in the FlightGear/Docs folder.
Since FGFS has a brisk pace of development, some information may be inaccurate.
Users should consider subscribing to the flightgear-users@lists.sourceforge.net mailing list.
More information and help is available on the FlightGear Forums.
Get new versions, add-ons, forum, wiki and more from the web-site at http://www.flightgear.org/ for free.