I went through all the units. They were interesting, and I definitely learned a bunch. I probably won't remember it all right away, but I at least have a better idea of the overall picture. It'll be reinforced as I continue my breadboard project, but also supports my theoretical understanding of that project. So I'd say it was worth it.

Imagine my surprise when I got to the end and realized there are multiple paths that branch off from there into new units 😱

It seems the learning shall continue...