Ed Weissman is one of the top contributors of hacker news, a community dedicated to programmers and startup owners.
He recently released a book containing his best comments on the website, which is truly a goldmine of information. You can find the free version here.
Inside the book you can read about productivity, startups, work life, and more. It’s truly a book to be read (and implemented) again and again.
P.S. Even if you’re not a programmer, if you can manage to go through a few programming related questions, you can still manage to get a ton of useful information.