Might be of use for beginner and old hands alike:
http://www.google.com/search?lr=&ie=UTF-8&oe=UTF-8&q=Beginning%20Ubuntu%20Linux%3A%20From%20Novice%20to%20Professional
The "Fedora for Dummies" type ones are also pretty good.
nice, but ive always wondered about people who buy the "For Dummies" books. Would you actually want something put together by a self confessed Dummy? :shock:
For one, because the "Fedora for Dummies" book is extremely well written and reviewed.
With Ubuntu, I think the forums are as good of a place for fixes, but sometimes its nice to just have a real book in hand.