Here are some of my articles available online. I'll update this occasionally.
If you're relatively new to photography, I suggest starting with my Back to Basics series.
Articles on this site
Top 12 Filter Techniques
Outdoor Photographer, November, 2007
Filters and the Landscape
Outdoor Photographer's Hotspots of the Pros
I've got a couple entries in this article
10 Practical Uses of the Depth of Field Preview Button
on Naturephotographers.net (NPN)
The Lowly Lens Hood on NPN
Getting Published: The Query Letter
Meadow Diving (a fun close up technique)
All This DAM Stuff
Digital Asset Management article on NPN