John Lovett
Paintings in oil, watercolor, and mixed media, with detailed notes on painting techniques and methods, and information on art materials.
http://www.johnlovett.com/

Nita Leland's: Exploring Color for Creative Artists
Information on color theory, creativity, design, watercolor, collage, workshops, art instruction books, studio setup, and art links.
http://www.nitaleland.com/

London International Art School
The Magic of Painting - free painting lessons on-line for the beginner to the advanced.
http://www.geocities.com/~jlhagan/lessons/

Nan Rae Art Workshops
Offers instruction on Chinese brush painting. Mail lessons are also available.
http://www.nanrae.com/classes.html

All About Painting Materials and Techniques
How to use the classical materials of both Eastern and Western painting, e.g., pigments, media, and resins. Includes articles and message boards.
http://www.cad-red.com/

Robert Garden School of Art
Provides lessons and videos in oil and watercolor; art supplies; and custom programs for groups and conventions. Classes at various locations in Texas.
http://www.robertgardenart.com/

Carol Carter Artworks
Provides workshops in watercolors and acrylics. A gallery of her works in also featured.
http://www.carol-carter.com/

ArtPapa
Free online sample lessons, oils and ceramics. Subscription fee workshops, and videos available. Forums to exchange information and get feedback.
http://www.artpapa.com/

Interactive Art School
Teaches how to draw and paint using still life perspective. Paid art lessons and materials kit, free sample lessons available online.
http://www.interactiveartschool.com/

Restoring a Masterwork
The Minneapolis Institute of Art's Restoration project presents the perspectives of curators, conservators and visitors regarding the process of restoring Giovanni Benedetto Castiglione's 17th century painting: The Immaculate Conception with Saints Francis of Assisi and Anthony of Padua.
http://www.artsmia.org/restoration-online

The Paint Basket
Free online lessons, tips, questions and answers. Information on art videos, workshops and painting holidays. Located in South Africa.
http://www.paintbasket.co.za/

The Stevenson Academy of Traditional Painting
Courses in oils, figure painting, still life and professional illustration. Course outline and admission requirements. Located in Sea Cliff, Long Island, New York, United States.
http://www.thestevensonacademy.com/

Jackie Simmonds
Art instruction books and videos from award-winning British pastel painter.
http://members.aol.com/jackiesimmonds/Page4.htm

Helen Van Wyk.Com
Helen Van Wyk is recognized by thousands of artists as the host of PBS's "Welcome to my Studio" television show.
http://www.helenvanwyk.com

Don Foster's Artists' Workshop
An art course on CD-ROM plus free information for student artists and art enthusiasts.
http://www.artistsworkshop.com/

ArtistsAnon
Painting articles, demos, and how-to for amateur artists.
http://www.artistsanon.co.uk/

Dance, Robert B.
Essays on painting with acrylics and watercolors and the use of scale models.
http://robertbdance.com/essays.html

Real Color Wheel
On location in Maui Hawaii. Free color and painting course by Don Jusko. Learn to accurately paint anything in front of you. Includes a coloring contest and galleries of painting tips.
http://www.realcolorwheel.com/

Virtual Art Academy
Downloadable self-study courses in oil, watercolor, and acrylic painting for purchase. Includes company and course information, FAQ, and account login.
http://www.virtualartacademy.com/