Taking some acting classes to start to develop your taste is one of the biggest things for Casting Directors. We are lovers of talent. And how you develop that love and appreciation is by understanding the art form. Even though you might not be a performer in your soul, take some acting classes so that you understand how an Actor prepares and develop your taste for the styles of acting that you particularly respond to. It helps to have a language for that.
I would say watch everything. Film degrees are great because you do some of that the way we do drama history through the theater programs; we learn about Ibsen and Chekhov and Shakespeare and Molière. When you have a film degree, you often learn about the filmmakers that have created the foundation of the history of film. That is going to help you have context.