Hi Elias
the term ebook is used here for different file formats like epub, mobi and pdf.
- For the activity book is an ebup import available. See https://moodle.org/plugins/booktool_importepub
- mobi is a proprietar format that can be used only with some players. Normally no chance to use them.
- PDF. There are a lot of options with file or folder ressource, database or glossary attachment
Ralf