In the "Add a book" function it would be great for instructors to have the option to designate "No text required" and have that display under the course booklist for students to see. Presently, if no books are listed for the course, the student is left to wonder (a) are there no books for the class? or (b) has the professor just not yet posted them? Such a designation would eliminate the guess work for courses that do not require a book.
This could be accomplished by adding a click or checkbox with "No text required" within the "Add a book" pop-up dialogue box (were one would otherwise enter an ISBN/Title or select "Enter book manually").