[avidiax]

This is a bit dated, but if you are interested in general electronics (rather than digital electronics), you can try https://repairfaq.org/.

Digital electronics is in many ways much easier, but the analog part tends to sneak in everywhere, especially when you find your digital stuff isn't working. I think it's hard to design anything new, even digitally, without at least a working knowledge of how Ohm's law, LRC circuits, transistors, diodes, op-amps, etc. work.

I don't think it was this course, but I recall checking out an impressively thick book meant for US Navy technicians. The advantage there is that the assumption (unlikely college textbooks), is that you are intelligent but not college educated, and you need to know how to work on nearly anything electronic. Again, the focus is mostly the analog side. https://archive.org/details/NEETSModule01/mode/2up