Have you ever heard of e-books? E-books are electronic books. They are no (big) than an ordinary book, with a screen on which you can read.
If you (not know) how the e-book works, the following will tell you the answer. First, you visit (website) on a computer and choose books you want. There are thousands of books on Internet. Then download the books you like into your e-book.
About 10 books will (save) at a time. Now you can just sit back reading and enjoy yourself.
(compare) with common books, e-books have many advantages. First of all, e-books save space. You can put least 10 books into an e-book and then carry it everywhere. Then you can download new reading materials into (you) e-book as many times as you like. With the (develop) of e-book technology, probably an e-library will appear. Then you just take your e-book there and download what you want to read. You no longer need to worry about your books are overdue(过期)or not. How fantastic our reading will be!