Ubuntu Pocket Guide and Reference
Keir Thomas is the world's most prolific and widely-read author writing about Ubuntu Linux. In 2006 he wrote the award-winning Beginning Ubuntu Linux (ISBN: 978-1590599914), the first English-language book to cover Ubuntu. A consistent best-seller, it was recently updated to a fourth edition.  Thomas is also the author of Ubuntu Kung Fu (978-1934356227), the #1 best-selling Linux book that contains over 300 tips, tricks, hints, and hacks for Ubuntu users of all levels. In addition, he is the author of Beginning SUSE Linux (978-1590596746), and, with Shashank Sharma, Beginning Fedora (978-1590598559).