Materials to understand how a CPU works.

I'm starting to study Computer Architecture. Yesterday I wrote a post because I thought I could build a CPU (a Von Neumann CPU with three buses) using chips, but thanks to u/FreddyFerdiland 's ( u/Cosmic_Raymond ) answers, I realized that it's neither simple nor appropriate to take that route. However, I'd like to fully understand how a CPU works. The course I'm taking is abstract, focusing more on explaining C++ and Assembly methods to solve certain problems. I'd like to fully understand how the hardware works. Please, can you recommend links and resources on this subject? Thanks.