There are thousands of books in the internet that can be read for free, or downloaded for personal use. What you find here is just an example to awake your curiosity and interest to look for so many precious pearls of literature.
To download the following books, simply click on the links and a download dialog box will open, asking you to approve the download and select where in your hard disk you want to put it. The books are compressed, with a .zip extension. To uncompress them, you need a utility, such as winzip or 7-zip. The latter one is free and you may download it from 7-zip.com and install it in your computer.