Somebody on bird app recommended this one too. I'll give it a read and see if it's worth sending to my dad. He's an English major and an avid reader, but not too technical.
Discussion
#[3] explains why bitcoin is the way it is in a very ground up way; it’s a great very quick read.
And he is an amazing person and bitcoiner.
You can also get a free digital copy from here. https://www.swanbitcoin.com/inventing-bitcoin/