Flibusta is a famous electronic library in the «onion» version. Here you can absolutely free download thousands of books on a variety of devices (tablets, phones, e-books, etc.) in Russian without any tiresome registration. If you are interested in publications in foreign languages, then you will need to be registered. This procedure takes no more than a few minutes. The database of the electronic library Flibusta is regularly updated with new editions. There are above 60 thousand users there, and the amount is constantly growing.