Flightsim Navigation! To me, one name and a specific website [in
addition to his DC-3 virtual airline website] comes to mind: Charles
Wood.
I'll say publicly that for 'both' the real deal [in its direct
adjunctive application therein] and the flight sims per se, this is a
flightsim navigation tutorial that I would rate as absolutely superior.
Superior!

Not only are NDB, ADF, RMI, VORS, ILS/GLIDESLOPE issues fully and
meticulously covered and thoroughly researched and explained [with
source citations therein] but the website offers downloads of 'all'
materials necessary to work your way through the tutorials with equally
downloadable planes/panels with special instructional features created
within the plane panels specifically for the tutorial.

So if you are new to flight navigation [real deal or sim!] or need a
refresher [*too much of that GPS 'follow the birdie' moving map
reliance....great stuff...I use it myself....but if the moving map and
follow the birdie tiny plane icon suddenly fail, then what? Put another
way, how are your back-up nav skills? Think about it! ], this is the
place to go!

Decidedly worth a visit....and all free!

http://www.navfltsm.addr.com/#top


Magnificent...and I don't use that word lightly. It's that good and that
beneficial where literally everything [planes and flight charts
inclusive] is provided!


Doc Tony