I have always found it really useful to go back to the first few examples of a device when learning about its function (e.g. https://www.extremetech.com/extreme

I have always found it really useful to go back to the first few examples of a device when learning about its function (e.g. https://www.extremetech.com/extreme/175004-the-genesis-of-the-transistor-the-single-greatest-discovery-in-the-last-100-years https://www.extremetech.com/extreme/175004-the-genesis-of-th...). Love seeing it in large scale as it becomes just another simple device like a resistor or potentiometer.