The best instructions I've seen for how to tie a cravat, three different ways.
How To Tie An Ascot or Cravat (an ascot is tied under the collar, a cravat is tied over the collar)
The Art of Vintage Manliness: Ties | Swungover
18 ways to tie a necktie How to videos
Cravat ties. Please note, most examples I have found where people attempt to ties these today come out way messier than what any regency gentleman would have accepted.
How To Tie A Cravat: Tying a Cravat, Instructions for Cravats
How to tie a scrunchie tie. I like the look of this don't you?
HOW TO TIE A Cravat - Neckwear Gentlemen's Wedding Neckwear
How to Tie A Cravat
Yahoo! Mancub and I spent tons of time in there department just yesterday...got home and realized we had no idea what to do with them!