When X-Plane has finished loading your airplane, press Enter for XPlaneNetworkData to begin receiving data from X-Plane.
Airspeed, heading, altitude, throttle setting, and vertical velocity will show in XPlaneNetworkData's window,
along with a small circle indicating the airplane's vertical vector; they will all show 0 until you press Enter.
Press any key on your computer keyboard to see what pressing computer keys 1 thru 0 or a few letters do.

HOWEVER, A, S, H turn on (and off) altitude, speed, and heading hold. They might wander a little.
If you type in a heading number followed by D (e.g. 123 D (for degrees)), the plane will turn to that heading.
If you type in an altitude number followed by F (e.g. 2500 F (for feet)), the plane will go to that altitude.
If you type in a speed (in knots) followed by K (e.g. 150 K (for knots)), the plane will change to that speed.
If you type in a different pitch than the default pitch of 5 degrees followed by P, the pitch will increase.
If you type in a different roll than the default roll of 30 degrees followed by R, the roll will increase.
Pitch and roll only increase by typing in a number, but they decrease to a small number by only typing P or R.
Typing D, F, or K will also show A, S, or H.
These numbers must be typed in on your computer's number pad.

AND if you press T, you'll see pitch trim, roll trim, yaw trim, and heading relative to plane's pointing (left to right).

The XPlaneNetworkData window disappears when it loses focus, but can be put back by pressing Alt-Tab.

To create destinations to fly to (and make ILS landings), you first need to open the folder that XPlaneNetworkData
is in, and create a new folder in it with a name of your choosing. This folder will hold all of your destination files.
Then, after you've selected an airport and runway in X-Plane, and the plane's on the runway, press the  1  key to open that
destination folder. Add a new filename to the folder. XPlaneNetworkData will convert the plane's data to runway data
and put the new destination's data in that file.

Press the  1  key again to see the name of the airport, the distance to it, and a small circle on the big circle indicating its
relative position (and with a line from it indicating the runway's direction). And, when you're on a final approach
to that runway, press the  3  key to see ILS cross-bars.

To fly a more accurate ILS, you'd need to select the opposite runway at that airport in X-Plane. XPlaneNetworkData will
use that data in combination with the first runway in order to use X-Plane's more accurate xyz 1-meter orientation
instead of X-Plane's latitude, longitude, and altitude. --SO-- you first need to be at the runway you selected by pressing   1  
and you need to select that Destination runway [again] in XPlaneNetworkData. AND with this showing, go to Flight Configuration
in X-Plane and put your plane on the opposite runway. THEN in XPlaneNetworkData, press and hold the Shift key while
pressing the   1    key for the second time. XPlaneNetworkData will then enter this location of the plane at the end of the first
runway location in the destination file for that airport. NOW you can press Shift-3 to see the more accurate ILS cross-bars.

To help with aircraft carrier landings, if you add an empty file that you've created (in Windows Notepad), with the name
CARRIER.dta, to your destinations folder, and then select it as the destination with  1  , XPlaneNetworkData will show
cross-bars that will take you to the #2 wire.

To stop showing destination data, you'll have to add another empty file with the name EMPTY.dta to your destinations
folder. Selecting this with  1  will stop showing that data.

To see anything else in XPlaneNetworkData, you'll need to create this folder: C:\\Users\Public\X.
That's where XPlaneNetworkData will look for the following helper files.

To see VOR or fix info, create a file in Notepad named Fixes.txt and put it in C:\\Users\Public\X.
In that file, using information from AirNav on the Internet, write the name of the VOR or fix, followed by its lat/lon.
For example, SANFRANCISCO 37-37-10.147N / 122-22-26.017W.
NOTE that no VOR names can have a space in them.
NOTE2 when you copy from AirNav, that VORs have a / between Latitude and Longitude, and fixes don't.
Press 4 to select a VOR or fix. It will show as a small black circle on the big circle.

To fly an arrival or departure to or from an airport, first create a file named ArrivalsDepartures.txt and save it to
C:\\Users\Public\X. Then find an arrival or departure in AirNav. Add that name to ArrivalsDepartures.txt,
for example: MIRAMAR 24R.txt (add the .txt to the arrival or departure name because it will refer to a file with that name).
Then create a file with the exact same name as the one you put in ArrivalsDepartures.txt, and enter the fix or VOR names
with the information that might be associated with them. An example that I put in MIRAMAR 24R.txt:
MIRAMAR 24R
MISSIONBAY OUT 360 RADIAL
HELSI BELOW 6000
GERNE ABOVE 7000
JULIAN IN 245 RADIAL
MIRAMAR 13NM ARC RIGHT
MIRAMAR 038 RADIAL AT 7000
MIRAMAR 065 RADIAL
ILS
NOTE that ILS above is just to tell you to begin following the ILS heading and glideslope bars (add ILS to Fixes.txt).
AND, if you didn't already, create a file named Fixes.txt in C:\\Users\Public\X. Copy all the fix/VOR names into this file.
THEN in AirNav, find those fixes/VORs, and copy the latitude/longitude from AirNav to Fixes.txt. For example:
MIRAMAR 32-52-11.099N / 117-09-17.513W
MISSIONBAY 32-46-55.951N / 117-13-31.530W
HELSI 32-54-40.460N 117-11-03.920W
GERNE 33-00-28.830N 117-09-12.960W
JULIAN 33-08-25.651N / 116-35-09.365W
NOTE when you copy from AirNav: VORs have a / between Latitude and Longitude, and fixes don't.
NOTE2 that if you use uppercase AT, ABOVE, and BELOW, a small line will indicate offset from these altitudes,
AND if you use uppercase IN or OUT followed by the heading in or out of the fix, a line will show that heading to or from
the fix, and a short vertical line will come into view showing the offset from that line as you get close to it.

Add to these 3 files as desired: 1.ArrivalsDepartures.txt, 2.(example)LAX 25R.txt, and 3.Fixes.txt.
Press D to fly an arrival or departure that you created using AirNav.

You could of course also create your own fixes by opening Google Maps and right-clicking on a location for a fix, and then selecting
"What's here" in the window that opens. You'll see its latitude/longitude displayed. Left-click on the latitude/longitude to see another
window with roughly the same latitude/longitude format as you see in Fixes.txt, which you can then copy and paste into the fixes file.
Correct the latitude and longitude to make it the EXACT same format as other latitude/longitudes in your fixes file. And give it a name.