If you don't understand every word, that's OK ... but
you should at least skim it and remember what topics
The poster child for today is transmission lines. I think
you will like Feynman's explanations, but even if you
don't, you should at least remember that waveguides exist,
transmission lines exist, coax exists, twin-lead exists,
et cetera. You should recognize that the "big circuit"
we have been discussing is an example of twin-lead.
Once you recognize it for what it is, you can find all
the details you want by googling.
There are two layers worth paying attention to:
-- Physics: What is he explaining?
-- Pedagogy: Why is he explaining it in this way?
IMHO he explains things with quite a bit of style and
panache. He cares about the unity and the grandeur of
physics, and is not shy about pointing that out.