This is a list of Links to content of other people that I find very useful.

Computer Hardware Basics

The “Computer Science Crash Course” is a great Video Series, that explains the basics how computers where developed and how a cpu works in depth.
It starts with a few episodes of history. Then explains how logic gates work and how they can form small calculators. After that it goes into the basic oparations of CPUs and memory how they are used by programming languages.
YouTube Playlist