Here's a fantastic resource for anyone who wish they could learn from a Python professional rather than reading a book: Corey Schafer's Python Tutorials
Among Cory's other playlists there are playlists covering how to set up a Python developer environment, object oriented programming with Python and general programming terms which also apply to Python.
All in all, a fantastic starting point for anyone wanting to get into Python as well as wrapping your head around certain concepts which take you from beginner to intermediate Python developer.
Maya 2017 was released today and with it comes a big change; PySide (and PyQt4) no longer works with Maya.
This guide explains how to deal with that and make your Python and PySide/PyQt scripts compatible with Maya 2017 as well as older Maya versions.
This guide is also applicable to e.g. Nuke or any other Python-enabled DCC app which uses Qt.