The idea of the layers thinking that the advantages of the e-book first of all it is easy to read, because you don't need to go out to buy a book at shop. The second message, it's easy to carry, because I can easily taken anywhere.
The notion of class I think the advantages of eBooks First, it is very easy to read. You do not need to go out and buy a book store. Second, it is very easy to carry. I can take it anywhere.
In my opinion, I think the advantages of ebooks, first, it is easy to read. Because of no need to go out and buy the book store, the second is in carry. Because I can carry it anywhere.