StoryMapJS is an open-source tool that allows users to create interactive georeferenced guides. It provides a simple editor to create a story map as a sequence of presentation slides, each describing a map location with header text, explanatory text, and optional media. The document discusses how StoryMapJS can be used to visualize existing content or create new content with geographical references. Examples provided include guides on locations in Florence and Prato, Italy created by teachers and students. Features of StoryMapJS allow users to add text, images, videos, and locate points on a map.