ASMP Nor Cal infrared article
ASMP (American Society of Media Photographers) is a terrific organization, offering great advice for professional photographers (technical, legal, etc), informative meetings, discounts on services and other useful support for photographers—I recommend joining.
My summary introduction to infrared, Seeing Beyond Red is published in the Summer 2007 Norcal Quarterly (page 7). Click to read the Quarterly (PDF).