My dad has no interest in mining crypto, but he is genuinely...

My dad has no interest in mining crypto, but he is genuinely curious how it works, and back in the '80s and '90s he was very on top of tech news but has gotten behind in the last 20 years or so. Do you guys have any recommended reading for him to do? I know Satoshi has his book, but I can't find enough reviews on it to know if it's actually approachable for him.