The Origins of Political Order and its sequel Political Order and Political Decay by Francis Fukuyama are two highly fascinating (if incredibly nerdy sounding) books that does a great job of synthesising how different political systems grow and evolve throughout history, including contributing influences on everything from agriculture, geography, religion, and more. For those who appreciate deep systemic thinking, this is a great book.
Roam is my knowledge management platform. It's where I capture notes for books and articles that I've read, ideas and concepts, as well as where I draft all my articles and newsletters. Where as Evernote is like a librarian's approach to knowledge management, Roam is like a gardener's approach.
I use WebFlow for my personal website. It's a powerful platform that is basically the new WordPress, is better from an SEO perspective (for people who care about that) which is why I wanted to use this for my primary website. That said, it's somewhat more complex to use than something like SquareSpace or Wix, so buyer beware.