yoteman,
I've tried the above mentioned site posted by Cougar and it's not bad, actually its the only one I've found with pictures, I've got O.K. results (still don't know about the paper triangles that are mentioned). Another tsukamaki (handle wrapping) site to try is:
http://www.mcn.net/~jswords/tsukamaki.html
Actually I just ordered a video on Tsukamaki today from Japanese swordsmith Tatsuhiko Konno on the west coast for $25.00. I should get it by the end of this week. His site is:
http://www.iserve.org/fujishiro/sword.htm
If you like I'll post my review of the video.
You can also get supplies like Tsuka-Ito (silk cord - $3.50 per foot) and Same (Stingray skin - $70.00) at Bugei Trading Company.
http://www.bugei.com
If anybody has any other sources for Ito and Same I'd be glad to hear them.
Hope this helps.
Take care,
Tom