A friend* working as a developer for his whole career knowing very little about electronic basics wants to change that.
Where would he start finding understandable answers (❤️ books) to stupid questions like "Voltage and current, huh?", ideally with a focus on practical stuff like "If I plug this power supply into a device, will it create smoke and funny smells?".
Bonus points if German, but English is fine too.
Boosts appreciated.
* Yes, yes, of course it's me.