Devices for reading electronic books (E-Book-Reader) have recently become increasingly popular. Does this trend mean the closure of printing houses around the world? - Most likely not, all statistically, owners of reading devices buy ordinary books three times more often than those who have not yet purchased them. It is noteworthy that unlike paper books, most people reading books from the screen are men. The advantages of this class of devices include mobility, large capacity and a long working time. Next, we will consider in more detail the advantages of electronic readers. Availability Along with the dimensions, functionality and battery life, a very important parameter is the ability to download the exact book you need on your device. There are various options for how this can be done. The simplest is buying an e-book in a store. Device models such as Amazon Kindle Keyboard 3G and Amazon Kindle Touch 3G allow you to do this without connecting the device to a computer and without co