I watched one of the videos, titled "Galois groups, intuitively".[1] It is about 18 minutes long and gave me a somewhat understandable overview what Galois groups are (not the theory yet!).
I suppose if you have the time to spare, at least it should give you an idea if the topic is of interest and whether you need to remind yourself of some mathematical concepts to be able to study rest of the material, or if it is too elementary for you and a shorter treatise from elsewhere would be preferable.
(I actually thought I had learned something about Galois theory in University algebra, but either I hadn't, or I've forgotten more than I wanted to admit. Which is to say, if you watch the video, your mileage may vary!)
I suppose if you have the time to spare, at least it should give you an idea if the topic is of interest and whether you need to remind yourself of some mathematical concepts to be able to study rest of the material, or if it is too elementary for you and a shorter treatise from elsewhere would be preferable.
(I actually thought I had learned something about Galois theory in University algebra, but either I hadn't, or I've forgotten more than I wanted to admit. Which is to say, if you watch the video, your mileage may vary!)
[1] https://ed-ac-uk.zoom.us/rec/share/_I-EeZA8_399ArdZ1GyKtM_rD... (link copied from the page, I hope it works)