PyQt Wiki
Tutorials for PyQt
PyQT4 Tutorial - A step by step PyQt4 tutorial
ZetCode's PyQT4 tutorial - Another step by step PyQT4 tutorial
PyQT-tutorial - uses QT-designer, very good for beginners.
IBM Qt/PyQt tutorial - a toy application is developed, first with Tkinter, then with PyQt.
Jonathan Gardner's PyQt tutorial - writing a GUI for the at utility.
EuroPython2006Talk - Introducing PyQt4 for GUI Application Development - a talk presented at EuroPython 2006
Creating GUI Applications with PyQt and Qt Designer - a talk presented at PyCon UK 2007
GUI Programming with Python: QT Edition - A very complete document about PyQt development