This book is woefully out of date and should be removed from sale in my opinion. I recently downloaded the latest Qt Creator from the web and purchased this book to try and help me with learning development with Qt. However, not even the first two examples worked, neither was I pointed to which project to select in the Wizard. Take it off Amazon. I would send it back if I hadn't been second hand and cost almost as much to send back!
It's a good book if you have absolutely no idea about Qt, but it probably won't help you if you want insight in more advanced or subtle Qt. There are better books about Qt, and more current (this one is getting a bit old, even more with Qt4).
Even though it is a little out of date this is the only book on the subject of Qt worth having. It takes the read beyond the tutorials contained in the Qt Reference Documention. I am eagerly waiting for the publication of the 2nd Edition.
This book written in a nice style, buts its rather out of date - it hasn't been updated much since Qt 1.44 and it doesn't mention newer additions, such as Qt Designer. Qt's own documentation and tutorials are very good. So you may not need this book at all.
This book by the KDE man Kalle Dalheimer is very recommendable - even for people with little C++ experience. If you are going to learn QT then forget about the tutorial that is shipped with QT and go grab this book :-)
This book is well layed out with some good examples. I found it easy to follow and it taught me the basics of gui programming very quickly. I would reccommend it to anyone interested in learning about qt.