How to download a book for free?

In the list of websites that we all comment, the link I chose was:

http://www.saberingles.com.ar/bookstore/librosgratis.html

First: you will find a list of available books, they are for free. Second, if you 
are interested in one of them; you just 
have to click over the name. Then the book will download in zip, you have to choose the option “open with” and you can use Microsoft word to open it as a .txt format. It easy to use and the most important you don`t have to sign up.