Here’s Mr. Hatvany’s gallery of knot pictures on this site. There are details of 11 knots, including the six in the Scout Handbook.
Also, Mr. Manz recommends checking out the many pages of animated knots on the Web. Basically the animation shows you how to tie the knot. Besides these, you can Google for “animated knots” or something similar.
A good general page for animated knots. If you go to the index page for this site there is some good information about knots.
Here is a site with an amazing amount of information, but the animation is sort of Wallace & Gromit style. You can adjust the speed of the animation which actually works pretty well.
http://www.animatedknots.com/index.php?LogoImage=LogoGrog.jpg
Here is another animated site for tying standard knots.
Here’s a link to a page with some knot tying software. There’s a free demo, too:
More animated knots—mostly for nautical use.
Even more in the way of animated knots.
How to tie a Turk’s Head knot for neckerchief slides!!!