approaching an NDB :
open 3 of your five fingers THUMB, INDEX, MEDIUM
Index = is Your present heading and track(needle)
if the desired track is on the right (thumb) go to the left to intercept it
if it is on the left (medium) go to the right to intercept.
Leaving an NDB the indication will became natural the track will be where indicated in accordance with the tail of the needle.........
Seems confusing but it works ...
Try also
http://www.casaberg.at/en/frameset_main_en.htm
I hope it will be usefull
Ciao