I think I bailed on being taught about Fourier transforms, because as I recall, the teaching was very much “here is some maths, oh and by the way it might be useful for some things” - a style which never really worked well for me.
Jez Swanson’s Interactive Introduction to Fourier Transforms goes into what they are - as well as uses ranging from practical to pointless - which left me wanting to go back and dig into how they actually work. I
haven’t yet, but I
want to…