Cool Art Sites
The Getty Search Gateway (over 10,000 high res. images)
Rembrandt's J'Accuse A fascinating documentary about "The Nightwatch" aka "The Company of captain Frans Banning Cocq and lieutenant Willem van Ruytenburch", by Rembrandt.
Secret Knowledge, by David Hockney, A documentary based on his book (of the same name) that explores the posibility that painters used projection devises for drawing as far back as 1420.
Harriette Lee Merrion (Illustrator)
Lectures
Things you can use
Daniel Greene Portrait Palette (right click and "save image")
Quiller Wheel (right click and "save image")
Art Renewal Center, list of skill based ateliers and academies
Analyze Art with Colour Theory (Beginner)
Pixlr image editor photo editing
Gamblin Artist Materials very good site to learn about art materials. Also, the video at the site "Color Space" is very good.
Drawing and Painting Instruction and Demonstrations