e-cash FAQ anywhere?

Could anybody tell me where I can find a FAQ or some primer on e-cash? I recently played with magic money but I would like to learn more about the various concepts. Thanks JFA Public Key at http://w3.citenet.net/users/jf_avon Jean-Francois Avon <jf_avon@citenet.net> 2048 bits key ID:C58ADD0D 1996/03/01 fingerprint=52 96 45 E8 20 5A 8A 5E F8 7C C8 6F AE FE F8 91