These are books on various topics that I have found to be useful over the years
Entrepreneurship
A Dozen Lessons for Entrepreneurs by Tren Griffin
What You Do Is Who You Are: How to Create Your Business Culture by Ben Horowitz
The Hard Thing About Hard Things: Building a Business When There Are No Easy Answers by Ben Horowitz
Applied Corporate Finance
The Outsiders: Eight Unconventional CEOs and Their Radically Rational Blueprint for Success
Cable Cowboy: John Malone and the Rise of the Modern Cable Business (the Kindle version is relatively low quality, I suggest the hard copy).
Phares Kariuki's blog 