Silkscreeningsupplies.com aka Ryonet

Check out Ryonet's Youtube videos! Lots of good stuff there!

Wikipedia entry: Screenprinting

Instructables: intro Screen Printing: Cheap, Dirty, and At Home

Spreadshirt - Design, Buy and Sell Custom T-shirts and More

Ryan Screen Supply - Screen printing equipment,
Check out the Tips & Artciles section

Silk Screen Printing Instructions:
Pretty good D.I.Y. resource

The DIY Guide to Screen Printing

unprofessional.net : Screen Printing Basics

D.I.Y. Archives: Screen Printing 101

Silk Screen Printing for Fun