[JKCalhoun]

Got 3½ hours? https://youtu.be/7xTGNNLPyMI

(I watched it all, piecemeal, over the course of a week, ha, ha.)

[spogbiper]

i really like this guy's videos

here's a one hour version that helped me understand a lot

https://www.youtube.com/watch?v=zjkBMFhNj_g