Excellent introduction for beginners! Simple, easy to use and great maps. Laid out month by month, it describes exactly what to look for and how to find it, so even I was identifying stars the very first time I tried...
What makes this book special to me is that it is written in plain English, not dry and dusty "science speak", and also contains explanations of the history and mythology which accompanies most constellations.
Great as a present for an older child, or buy it (like I did) for yourself as a curious adult.