Emerging filmmakers need to know the basics of their art form: the language of the camera, and lenses, the different crew roles, the formats, the aspect ratios. They also need to know some bare-bones theory: what an auteur is, what montage is, what genres are. But, even more urgently, young filmmakers need answers to their questions--What lens was used? How did they do that effect? Who paid for that picture? How did they get it past the censor? Most...