Electronics

I like to learn by reading regular old books. There should be plenty availible. Some textbooks, beginners books for hobbyists, some that go along with some experiment box... Starting with what is Ohm's law to how does an amplifier work, flip-flops / whatever. I borrowed and/or bought some books about Arduino, because that's something I like more than analog circuits. I have one that is focused more on the programming part, but there are books with like 80 Arduino projects. You could try Fritzing or the official website for material and project ideas. But my current life-hack is visiting the library or buying a book that teaches things in a structured way. Unfortunately I can't give specific recommendations. My books are old and not in English.

And another bit of advice, don't do it like me and start like 40 complicated projects and have them all unfinished in some drawer. There aren't really bad consequences with that approach, but I suppose it's more healthy to at least stay a bit focused. And don't get disappointed by starting some projects that are way above your head. You'll get there but it takes some time and effort.