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@davidpgil I know nothing about electrical engineering, but these seem promising to me
https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-002-circuits-and-electronics-spring-2007/index.htm?utm_source=OCWDept&utm_medium=CarouselSm&utm_campaign=FeaturedCourse
at least as a starting point maybe.
@namark Yes, I just checked, this one provides a lucid introduction to circuit analysis. @davidpgil