wxPython is a blending of the WxWidgets (formerly WxWindows) class library for C++ and Python. wxPython can be found at (surprise!) http://www.wxpython.org/ and it has its own wiki there: http://wiki.wxpython.org/. ShowMeDo has a collection of [http://showmedo.com/videos/series?name=PythonWxPythonBeginnersSeries introductory wxPython videos].
wxPython Guide is a thorough tutorial on wxPython toolkit. It can be found on [http://www.zetcode.com/wxpython zetcode.com]