I have found out a website which is showing more than 100 Free Linux eBooks. Most of ebooks are formated in PDF for downloading. I am just not sure that these links are valid. According to this website, you can download 10 books per day.
You can have a look on the following list first. Then you must access directly to download. Try it if you like!

Updated (21-January-2009): The link was removed already because the site was broken.


  1. plantman // 1/20/08, 7:53 PM  

    The links don't work for me.