Display of favourite books
You can manage your favorite books from the sidebar on the left of your home screen.
Your favorite books are marked with a full star.
Note that a new book is directly listed as a favorite.
Adding a book as a favourite
Click on the empty star next to the name of the notebook in the left sidebar of your home screen. The star becomes full, your notebook is now part of your favorites:
Removing a book from your favourites
Follow the same process as above but this time, once the star is empty, the book will no longer be among the favourites.