The main job of the Narrator is to facilitate the game play by narrating the setting and interpreting rules. But these are not the only jobs as the Narrator is also the host, the researcher, the scheduler, and the rule clarifier. There is a lot of responsibility for the Narrator but there are also tools and processes to help Narrators manage it all.
To help explain how to tackle this, the jobs have been sorted into two categories: Hosting and Preparation. In addition, there is a section dedicated to first-time Narrators with suggestions and proposals to make starting easier.