https://techdevguide.withgoogle.com/paths/foundational/?no-filter=true
https://www.udacity.com/course/introduction-to-python--ud1110
https://www.udacity.com/course/intro-to-data-analysis--ud170
https://www.udacity.com/course/intro-to-data-science--ud359
https://www.udacity.com/course/machine-learning-for-trading--ud501