Folks might also like to get hold of PDFs of the now-defunct Everyday Electronics. https://worldradiohistory.com/Everyday_Electronics.htm https://worldradiohis

Folks might also like to get hold of PDFs of the now-defunct Everyday Electronics. https://worldradiohistory.com/Everyday_Electronics.htm https://worldradiohistory.com/Everyday_Electronics.htm Just looking at the Aug 1976 edition, they have a touch sensitive door alarm, an electronic timing game, beginners short wave receiver, and 2 watt amplifier. There's a "teach-in" that gives a nice overview of reactance, impedance; and much more besides. Seems like a good way for young and old alike to get fired up about electronics. All free.