Book by Shane Parrish
If you've read Charlie Munger's Almanack this is the book you deeply crave in its wake. Shane's done a wonderful job over the past few years making mental models approachable through FS.blog. A mental model is a way to look at a problem through a certain lense: an economist will look at a problem one way, a biologist another, and a statistician yet another. Learn the big ideas from the big disciplines and you'll be able to twist and turn problems in interesting ways at unprecedented speeds. His blog already documents a subset of models, but in this book Shane goes in even more depth with rich examples of each under the umbrella of 'General Thinking Concepts', e.g. Occam's Razor. This is the first in a 5-part series: the encyclopedia of the big ideas from the big disciplines. One that I hope to be recognizable on bookshelves around the world. You owe yourself this book.