This is code and notes from Welch Labs' wonderful little tutorial here. If you'd like to check out the notes, any .ipynb will be more readable than its .org counterpart.
I work in Spacemacs, so I wrote the code and notes in Org-Mode, running code using emacs-jupyter, although tbf I suspect it was basically the same as running org-babel.
Then I exported to a notebook so that I could view latex on GitHub.
For more advanced usage I'll refer to Pavel Korytov's brilliant post.