The Munger Operating System: A Life That Really Works by @FarnamStreet
Rules to live, and prosper by.
The Day You Became A Better Writer by Scott Adams
Even though I am a very good writer and I’ve been writing a lot since I was young, I still open up that blog post and put it in the background anytime I’m writing anything important. It’s that good. I use it as my basic template for how to write well. Think about the title, “The Day You Became a Better Writer.” It’s such a powerful title. He teaches you in one small blog post the importance of surprise, the importance of headlines, the importance of being brief and directed, not using some adjectives and adverbs, using active not the passive voice, etc. This one blog post right there will change your writing style forever if you put your ego down and absorb it properly. 
Want to become smarter in ten minutes? Absorb this: Crony Beliefs
Best post I’ve read on “Career Decisions” (in Silicon Valley / tech) by @eladgil
Harari’s Sapiens in lecture/course form on youtube.
Every business school should have a course on Aggregation Theory. Or learn it from the master himself, @benthompson, the best analyst in technology.
Great read. “Quantum physics is not “weird”. You are weird.” – Think Like Reality
Must read. “Lazy Leadership” by @Awilkinson
No-holds-barred wisdom from a self-made man. Everything on @EdLatimore’s site is worth reading for overachievers: https://edlatimore.com/