1) The author researched the horror genre and subgenres to help decide what type of horror movie trailer they would create. They learned about common character archetypes, settings, and narratives in horror trailers. 2) Secondary research sources like Wikipedia, IMDb, and YouTube provided information faster and more comprehensively than primary research. However, the author also conducted a questionnaire to get opinions on movie genres. 3) The research uncovered conventions like family characters moving into a new home that gets disturbed by creatures or spirits. It also showed the importance of music in setting the mood and building tension in trailers. 4) In conclusion, the research helped the author understand what makes for a good horror trailer