Is there a modern book which targets a current QT? Last time I was looking (and on Google just now) I wasn't able to find a book that took someone from never having used QT to shipping something.
There's one available online: http://qmlbook.org/
As the name says, it covers basically just QML, but QML is an important foundation of modern QT5 so I guess the book is very nice to have.
The docs site has a lot of tutorials, and Creator comes with a huge examples portfolio. Each example also has a small book about it.
I've been looking for this too, but most books like this are older and focus on Qt 3 or 4, not Qt 5.
I guess it was changing too rapidly. I'm waiting for such book as well.