Book Creator is a great app I have used on the iPad - and is now available through the Chrome web browser so anyone can create a book!
With Book Creator you can create beautiful looking books online, complete with page-turn animations, comic book styles, videos, pictures, text, shapes plus you can draw with your pen also.
With the free version you can create up to 2 books and a teacher can give students a code so they can add their book to a class bookshelf (up to 40 students).
Here are the details:
Book Creator on Chrome