[boomlinde]

The Heathkit EC-1 operations manual seems like a good start for electronic analog computers and has some examples of problem circuits: http://www.ccapitalia.net/descarga/docs/1959-ec-1-heathkit.p...

I also like to share an instruction video on mechanical computers on every suitable occasion: https://www.youtube.com/watch?v=s1i-dnAH9Y4