The website of Gamblin Artist's Colors has valuable technical information about oil paints and materials. There are also some useful video demonstrations at the site. I personally like their oil paint for several reasons: linseed oil vehicle, good balance of pigment, Gamblin's concern with making archival products, and the company's responsible green practices. I regularly use their stuff in my work, along with a couple of other brands.
If you're an artist you'll want to check out the links at Gamblin's home page sidebar. The Studio Notes page offers a rich source of knowledge about a variety of subjects. Robert Gamblin's latest article "Getting the White Right" tells about white pigments, vehicles (various oils used in making the paint) and the properties of each one. It is useful info for anyone who cares about the working aspects of the white paint they use, flexibility, etc.
"Snowy Shadows" Original oil, 5"x7"
©2011 Diana Moses Botkin
This piece is currently available at OutSkirts Gallery in Hope, Idaho. If you're out that way, drop in for the art and the food.