A few quick links until you get a proper book :

http://www.commandprompt.com/community/pyqt/ (disregard the blackadder stuff)

http://lateral.netmanagers.com.ar/stories/BBS47.html

http://www.zetcode.com/tutorials/pyqt4/

And of course the examples and docs dirs of
http://www.riverbankcomputing.co.uk/...l-4.6.1.tar.gz