The 'Book' tool makes it easy to create multi-page resources with a book-like format, using chapters and sub-chapters.
It is not an interactive tool but can be used to link to documents, forums, choices etc. and display other objects like videos and images. Books and individual chapters may be printed by selecting the relevant link in 'Settings' > 'Book Administration'.
Top tip: It is a good way to segment content into manageable chunks that are in a sequential, easy-to-navigate format for students.
For more information, please see docs.moodle.org - Book.