I guess it's $100 for a bunch of videos of lecturer scratching on a whiteboard something that you can learn yourself with interactive demos, sympy and a jupiter notebook.
I found a couple of tutorials, but they're about using sympy rather than the theory, and they aren't actually notebooks:
https://www.sympy.org/scipy-2017-codegen-tutorial/notebooks/...
https://www.cfm.brown.edu/people/dobrush/am33/SymPy/index.ht...