FlipSnack is a flip-book creation site which I've used for e-books in the past. It's an extremely easy to use resource and the educational version allows you to create unlimited flipbooks, assignments for students and more.
The free version only allows 10 student logins, but it's still a great resource (they wouldn't like me suggesting this, but some students may be able to double up on account if you have them do group assignments or only use flipbooks for reference).
Here's an example of a flipbook describing the Circulatory System:
I was thinking about ways to use this, and decided flipbooks could make for great study guides. Students could use their computer or any mobile device to review each lesson before a test, and an instructor would be able to reuse the same books every semester or year. For example, if you had a syllabus that outlined each lesson, you could also include the flipbook link for your students.
I'd love to hear if anyone else has ideas for how to use this new site! Feel free to share how you would use it in the comments.