Pay special attention to the famous murder sequence in the shower. How is this sequence edited? Note how Hitchcock creates the effect of horror with an adroit use of quick cuts and sound.
How does the film frustrate our usual narrative expectations? For instance, we start out identifying with Marion Crane, who seems in the opening sequences to be the protagonist of the film; so her murder less that halfway through forces us to re-evaluate the entire set of assumptions we have had up to that point. How does the film's center of gravity shift thereafter? To what extent do we sympathize with Norman Bates, even though he would conventionally be thought of as the villain? And why?