I'd like to piggy-back (and not hijack) on the recent thread by Jock Scot on theory and practice. It got me to thinking again (there I go again; thinking) about the world of formal wear in general and “youngsters” today. (I'm starting to sound like my father)
I'm sure that a lot of guys in the US, Scotland, England, Canada, Australia, etc. don't have the slightest idea of how to properly wear a tuxedo or set of tails let alone a Prince Charlie or Montrose Doublet.

So here is web site that says it all. Even though my budget does not allow for most formal wear, I'm a bit of a cloths junkie, so I find the entire site a fascinating read.
http://www.blacktieguide.com/Introduction/1_Appeal.htm
There is a lot advise on what to do and what NOT to do and why. Most of the advise on style can carried over to the kilt. There is even an excellent section on how to tie a bow tie.

The Red Carpet hall of shame is quite enlightening. And as of September the author has added a Formal Highland Attire page! It's in the supplemental section.