Analog computing is about making analogs (today we would say usually say simulations) usually of physical systems, usually with operational amplifiers. Learn t

Analog computing is about making analogs (today we would say usually say simulations) usually of physical systems, usually with operational amplifiers. Learn to model physical systems with differential equations first (and in 2021 you will probably also learn to solve/integrate them numerically on a computer in the process) then go to op amps. Here are some other interesting problems you can solve with analog computers that aren't really modeling problems, though: http://dataphys.org/list/dewdneys-analog-gadgets/ http://dataphys.org/list/dewdneys-analog-gadgets/