If you're interested in analogue electronics then you might like the analyses done on the ElectroSmash website. [1] They reverse engineer schematics from guit

If you're interested in analogue electronics then you might like the analyses done on the ElectroSmash website. [1] They reverse engineer schematics from guitar effects pedal PCBs like this Fuzz Face [2], then go through the process of breaking the circuit into blocks of operation. They also simulate the circuits such as with this Tube Screamer [3] and see what effect manipulating component values has on the signal. [1] https://www.electrosmash.com/ https://www.electrosmash.com/ [2] https://www.electrosmash.com/fuzz-face https://www.electrosmash.com/fuzz-face [3] https://www.electrosmash.com/tube-screamer-analysis https://www.electrosmash.com/tube-screamer-analysis