Online books, good or bad

I got all new classes this semester, so of course all new books. Well, I got to Biology and my teacher says that all books will be kept at school and that if you need one you can access it online, or you can borrow a cd and burn your own copy. So this good or bad?

Well, in your situation, its not wrong, since its a book you would have access to anyways, but the other books…I think online books are alright, since they still arent as good as (for me at least) the real thing, and their good (like napster was) for trying out the book first, before buying it, but Id rather get the summary to find that out…