A free content type for creating interactive books. It allows users to put together large amounts of interactive content like interactive videos, questions, course presentations and more on multiple pages.
Book of Berries
The example here is a classical interactive book with a mix of informational content and tasks. Interactive Book may of course also be used only with informational content. Also note that each page in the book has its own URL allowing you to link to a specific page and also making sure that every page is indexed by Google.