If I will ever decide to step into filmmaking, the first site I will be visiting will be Proletariat Pictures. They have a bunch of articles, links and stuff – as usual. But the most important thing they have at their site is “Guerrilla Filmmaking 101” course. It is an excellent introduction on what it takes to make a movie. It is much easier to do the research from there on.
Until than, I’ll stick with photography. :)