https://medium.com/learning-new-stuff/machine-learning-in-a-week-a0da25d59850#.4ntiguxbi
https://codequs.com/p/BkaLEq8r4/a-complete-machine-learning-project-walk-through-in-python
http://cs231n.stanford.edu/
http://www.fast.ai/
https://nbviewer.jupyter.org/github/Yorko/mlcourse.ai/blob/master/jupyter_english/tutorials/more_info_about_numpy_kseniia_terekhova.ipynb