The document discusses what the author has learned from filming a pre-production video with their group. They realized they need to frame shots properly and not cut actors' heads off. They also learned editing techniques like slow motion and how to use it effectively. Through the pre-production, the author gained experience with filming techniques like the 180 degree rule and match on action. They improved their teamwork and planning skills. Overall, the author feels they have learned a lot about film production through this experience.