I can see them/click/read them fine from the My Files section, but I want to add them to my homescreen instead to make them easier to access. Any ideas?
When you go to the "My Files" section on your library, touch and hold the book you want for a second or so. When you release it, you should get a pop-up menu. One of the items is "Add to Home". Touch that and you should then see the book on you home screen.