Start with electric circuits (passive components), then electronics (transistors and amplifiers), maybe some digital logic design, then PCB is mostly about figuring out the software.
Art of Electronics was (in my time) the go to for hobbyists and it was very helpful for EE students as well. Seems to still be popular.
I have most of the books in this list. I think practical electronics for inventors was a good beginner one but can't find it so I'm not sure. microelectronic circuits is excellent if you get that far.
https://www.reddit.com/r/AskElectronics/wiki/education/
A beginner book or two and some online study and you'll have plenty of confidence for PCB designs. You don't need to get too advanced if you just want to design PCBs with microcontrollers. You will have so many reference designs to start from, even if you can't fully analyze a circuit you can probably understand enough to get going.