The first thing you need to do is decide what level horn you want-- student or pro. New student horns are fine for beginning players, but beware of buying used student horns; not that they're junk, but because...
As a former WAC, I frequently search for vintage WAC items, and I have noticed one seller in particular (pophorton)who regularly offers "vintage" 60s and 70s items such as key chains and pins which he calls...
"Guitar Packing Demystified" by allenconsigments is an excellent and informative guide. There's only one more point to remember that I can think of: Remove the end pin if there is one, or the bottom of the...