The official PGP user's guide

A pretty bad problem, John Perry Barlow. Part 1 Essential topics: quick overview why do you need GDP? how public key cryptography works installing PGP using PGP managing keys advanced topics beware of snake oil. Part 2 Special topics: useful details setting configuration parameters a peek under the hood vulnerabilities legal issues compatibility with previous and future versions of PGP sources of information on PGP appendix - PGP quick reference.