This link is good to look at if you want to learn about the movement that evolved into Surrealism. Dadaism was a form of anti-art, if you will, that was created to oppose everything that art stood for. It came into being around the end of World War I. It was to represent and express the confusion still left in peoples minds post-war. Dali dabbled within the realm of Dada but was never widely recognized as a Dadaist. This site has many links which will direct you to other sites which you may use to view some of the artists works. It also gives full explanations of selected works by the artists.