For digital electronics I recommend Ben eater’s series and kits. Basically starts with an assumption that you understand very basic direct current (as in you know that current flows from a voltage source to ground), and takes you all the way through building a vary basic computer.

I would also recommend building your own project, and having it made at one of the Chinese fab houses. Even something as simple as replicating an Arduino will teach you A LOT.

I productized an arduino prototype by self teaching, and it’s all really not that hard once you get a grasp of the basics.