Part of the popular "... for Dummies" series, Joomla for Dummies has been out for a few years, and is an very helpful, if not particularly deep Joomla book.
I have recommended this to a number of people and they have found it very helpful and helped them get over the initial learning curve quite quickly.
The basic Joomla concepts are explained in a light, humorous way, and take the new user step-by-step through the various parts of Joomla.
You won't find advanced tips here ... you wouldn't expect to.
But, for the person new to Joomla, this book will serve very well and the price is reasonable.