Books
Think Python 2nd Edition is a great starting point and the pdf version is made available for free by the author Allen B. Downey
https://greenteapress.com/wp/think-python-2e/
Download Python 3 Documentation
https://docs.python.org/3/download.html
MSDN Channel 9 Videos
https://channel9.msdn.com/Series/Intro-to-Python-Development
https://channel9.msdn.com/Series/More-Python-for-Beginners
Even More Python for Beginners - Data Tools
https://channel9.msdn.com/Series/Even-More-Python-for-Beginners-Data-Tools