Recommended · for some experience
“Hello, world” from scratch on a 6502 - Part 1
Why people recommend it
Ben Eater starts building a 6502 computer on breadboards, single-stepping the clock to watch the bus; a frequent starting point for people building their own.
Watch for: the paused-clock behaviour from about 22:42
In their words
Inspiration for this was a video by Ben Eater:
Niko O on electronics.stackexchange.com, Jan 2020. CC BY-SA.