Periodically, I like to go back and study design basics. I find that this helps my work no matter what medium I'm working in at the moment. There are basic principles of design that apply to both illustration and photography. With this end in mind, I did a web search for graphic design bibliographies. The first site that I have explored from the search results is "Design Feast." This site has so many links to interesting design related web sites that it will probably keep me learning and entertained for months if not years. It is one of those sites that I will keep going back to over and over to glean the knowledge the skills for specific projects. Design Feast should be extremely helpful for the designers, photographers, and illustrators who use Dreamstime.