PGP & GPG: Email for the Practical Paranoid
"An excellent book that shows . . . just about everything [you] need to know to effectively and properly use PGP and OpenPGP." --Slashdot, June 26, 2006"Buy and read this book to gain a better understanding of how to protect and secure . . . messages from unauthorized viewing." --About.com, June 12, 2006