It really depends on how deep you want to go. This is a topic that requires tunneling through surprisingly few layers before you hit quantum mechanics. I haven'

It really depends on how deep you want to go. This is a topic that requires tunneling through surprisingly few layers before you hit quantum mechanics. I haven't gone through it, but "From NAND to Tetris" [0] is often recommended these days. My own education in these topics was a lot less organized and took quite a few years to really click. Thinking about "the flow of electrons" is more of an analog topic, and that class of behavior is usually treated as non-ideal inefficiency for purposes of digital logic systems. This stuff is extremely important in figuring out how fast you can make things go when designing a real chip/board, but the gory details are fairly unimportant to computer architecture concepts beyond accepting the more abstract models of gate delay (each gate a signal passes through delays it) [1] and fanout (the more inputs you drive with a given output, the slower those inputs are switched) [2]. [0]: http://nand2tetris.org/course.php http://nand2tetris.org/course.php [1]: https://en.wikipedia.org/wiki/Propagation_delay#Electronics https://en.wikipedia.org/wiki/Propagation_delay#Electronics [2]: https://en.wikipedia.org/wiki/Fan-out https://en.wikipedia.org/wiki/Fan-out