Just like Linux is free, so are some of the books. I found this list fascinating and wanted it to share with others here.
The top of the list of free Linux books? That's right, The Ubuntu Pocket guide.
Also a very interesting book is now free for the download called "After The Software Wars" by Keith Curtis. Anyway, good reading!
"20 of the Best Free Linux Books
The focus of this article is to select some of the finest Linux books which are available to download for free. The vast majority of the books featured here can also be freely distributed to others."