[icco]

I don't know about books, but I took an introductory art class at my local junior college and it helped me a lot. Just understanding the basics of color and how artists go about laying out pictures translated a lot to helping me at least understand why designers did things online.

[mannicken]

I found abstract art to be related to web-design closely, in that a web-page is essentially a piece of abstract art: shapes of various size and color that in conjunction help us navigate to text/content we want.