Access Pedal - Great resource for steel info - with extensive players directory.
Brad's Page of Steel - THE site for non-pedal and lap steel information.
Steelin' Home - Western Swing Steel.
Jeffran College - Jeff Newman's excellent instruction materials.
Joe Wright's WWW catalog - Instructional material with online samples.
Tom Bradshaws Pedal Steel Guitar Products - Instructional material, cassettes, CD's, accessories.
A Jazz Improvisation Primer - Mark Sabatella's excellent online book useful for even non-jazz musicians.
Musical Modes - An overview of scale modes and how to derive them.
OSGA - The Oklahoma Steel Guitar Association Homepage.
Earl Clarks Homepage - Earl Clark's pedal steel page.
Steel Pickers in Cyberspace - Ohio steel player Mike Meese has a page with great photos and many steel guitar links.