Check out this list of terrific articles from Daniel M. Davis:
Self Publishing Advice
Daniel is a very talented independent artist and runs the groovy site Steam Crow Press.
He is very generous on his site and offers articles with advice for other illustrators and artists.
When looking for business inspiration on the web you can find it in such a wide variety of places. I enjoy checking out the hip well designed sites from young artists and designers. I also like looking at huge commercial sites like my favorite 3 "A's" ... Amazon, Adobe and Apple.
Time spent surfing the web is never wasted ... you never know when you will bump into some little tid-bit of knowledge or inspiration that will take your business in a whole new direction.