I found the following Youtube video to be better however: https://simons.berkeley.edu/events/theoretically-speaking-ma...
As a ~1-hour talk, Dr. Wootters is able to dig more deeply into Reed Solomon codes (a very popular error-correction code for nearly 50 years), as well as applications into strange stuff: like using RS codes in "Test Pooling" to save money on Syphilis tests (and probably the same methodology being used for "Test Pooling" in today's COVID19 world).
Dr. Wootters keeps things relatively dumbed down, never getting too into the weeds of the math (and indeed: only sticks with the GF(5) field, a prime field instead of talking about the more applicable extension fields). Still, extension fields follow mostly the same concepts, and GF(5) is sufficient to cover all the concepts.