ReadOasis Step 2
An e-book is an electronic book. People can read e-books on personal computers and mobile phones. A special machine also exists just for e-reading. It is called an e-book reader. The Sony Reader is one popular e-reader. But in November 2007, Amazon.com created an e-reader, too. It is called the Kindle. This is important because Amazon is the largest online store in the US. Now the company can sell e-books and e-readers.

The first Kindle could hold up to 1,500 books. But by 20...