Ben Eater's fantastic video series on building a breadboard 6502 based computer and an 8-bit breadboard computer from scratch might be appreciated in this thread.
Highly recommend Ben Eater's video, which in this embedded developer's eyes has been the clearest, best explanation of the fundamentals of a CPU as I've ever seen.
My flow for watching youtube has been to subscribe and sign up for email alerts (the bell). When I had some time to watch, I'd scan my youtube alerts email folder for items of interest. It was efficient and would quickly leave me with a queue of videos.
I don't even know what the alert bell is for now. If I look at notifications its full of "recommendations". If I go to my subscriptions its random items from all my subscriptions regardless of "the bell".
6502 playlist: https://www.youtube.com/watch?v=LnzuMJLZRdU&list=PLowKtXNTBy...
8-bit build playlist: https://www.youtube.com/watch?v=HyznrdDSSGM&list=PLowKtXNTBy...
He also sells kits if one is interested in playing along.