Ubuntu Linux:

Ubuntu Linux is a state-of-the-art operating system, and you need a book that’s just as advanced. Along with being the most comprehensive reference to installing, configuring, and working with Ubuntu, A Practical Guide to Ubuntu Linux« also provides extensive server coverage you won’t find in any other Ubuntu book.

to download this book follow the link below:

http://rapidshare.com/files/227416917/ebook_PH-_-A-_-P-_-G-_-U-_-L.7z