Surprised no-one has mentioned Ben Eater: https://www.youtube.com/c/BenEater https://www.youtube.com/c/BenEater He has a series on building your own computer.

Surprised no-one has mentioned Ben Eater: https://www.youtube.com/c/BenEater https://www.youtube.com/c/BenEater He has a series on building your own computer. His "World's Worst Video Card" is also instructive. Ben's brain must be wired differently from the rest of us, as nearly all of us would have given up long before reaching the stages that he has. ExplainingComputers also gives you a weekly fix on computing hardware. https://www.youtube.com/user/explainingcomputers https://www.youtube.com/user/explainingcomputers His content is mostly around the latest SBCs (Single Board Computers).