I was just checking out a tremendous list of GTD resources at Bootstrapper: "The GTD Resource Motherload: 100+ Links." There are 103 links there - I haven't been through them all yet, but have found a few gems already so I wanted to share this resource with you.
A few of my favorites:
99. A Roadmap to Spectacular GTD Failure: This article tells readers what NOT to do if you want to implement a successful GTD system.
This includes such gems as the following (which would be funnier if it didn't hit so close to home:"Do your weekly review when you're damn good and ready - Make sure to never even attempt to schedule a regular time for your weekly review. Friday afternoon, Saturday night, Wednesday during lunch. You're a busy person with a dynamic life - you clearly can't be expected to block out 1-2 hours per week!"67. GTD-Tools.com: GTD-Tools.com publishes articles and reviews of the "best GTD tools and productivity software tips." Readers can also catch up on the latest GTD-related news.
Visually, this is a bit busy but it contains some awesome info!52. Time Management, Simplified: This post teaches readers "how to be productive with no worries" by simplifying the GTD system so that it works for your life.
I really like this "in a nutshell" summary of the essence of GTD.
These three samples are just barely scratching the surface - go check out the other 100 GTD resources!