http://interactivepython.org/runestone/static/thinkcspy/index.html https://elitedatascience.com/learn-python-for-data-science http://www.scipy-lectures.org/intro/ http://pythonforengineers.com/python-for-scientists-and-engineers/ https://github.com/jupyter/jupyter/wiki/A-gallery-of-interesting-Jupyter-Notebooks#introductory-tutorials
http://jrjohansson.github.io/ https://github.com/jrjohansson/scientific-python-lectures