There is a site called jewelrylessons.com - free to join. As a member, you can browse their tutorials by price.
There are lots of tuts for clasps and several of them are free. The clasp that I use for most of my bracelets is from a free tutorial on that site.
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Additional Sites by: Anonymous
You can also check out Beading Gem, they have loads of tutorials. And don't forget You-tube, there are so many blogs and sites out there, just type in "Handmade Clasps".
The switch knot is a decorative lacy macrame/ hemp jewelry knot that helps you save on twine too. This tutorial shows you how to tie one with clear pictures and instructions.
A sliding knot is a wonderfully easy way to end off a leather, string, hemp, or corded necklace or bracelet. It looks neat and stylish, is a very practical closure, and is very easy to make.