I just recently updated my personal PGP/GPG keys and I thought that I must drop some great resources here for beginners or who wants to delve into this archaic yet great technology.

Alan Eliasen GPG Tutorial - A really comprehensive tutorial about GPG

Curtis Wallen Beginner Guide - A beginners guide (internet archive copy)

Dev Dungeon - Another GPG Tutorial

Backup and Restore GPG Keys - A simplified tutorial for backing up and restoring your keys

PGP WKD Tutorial - A tutorial for setting up PGP WKD

The Call of the Open Sidewalk - A completely partisan pro-OpenPGP series of articles