Thanks to all who attended today! Here is a link (modified after FOSS4G NA 2015) to the slides, and below are more links for some of the free resources that were highlighted.
Code Academy (programming tutorials): http://www.codecademy.com/
Coursera (full courses): https://www.coursera.org/courses?query=python
Python wiki pages: https://wiki.python.org/moin/BeginnersGuide/NonProgrammers
Python at Berkeley (DLab): http://python.berkeley.edu/learning_resources.html
Python Books and Training: http://pythonbooks.revolunet.com/
ArcPy tutorials from ESRI: http://training.esri.com/gateway/index.cfm?fa=catalog.
List of spatial Python packages: https://github.com/SpatialPython/spatial_python/blob/master/packages.md
If you are a graduate student, check out the graduate student-led workshops for Spring 2015: http://goo.gl/forms/rUceY1I67n