I love the $15 price for textbooks. That is great and would really help keep prices down for students as most books are $100+ now. My question is, can these be

I love the $15 price for textbooks. That is great and would really help keep prices down for students as most books are $100+ now. My question is, can these be put onto a Kindle? Also, is there an iBook app for Windows/OSX?