A step-by-step, encyclopedic reference manual by Steve Blank and Bob Dorf on how to build and scale a successful startup. Best to read this book in parts and reference it whenever you need help with a particular section.
Rob Fitzpatrick has written the most essential book on validating your business ideas correctly and in a way that is practical and will save you time, money, and heartbreak. It's a short book that basically says that you shouldn't ask anyone if your business is a good idea, because it's a bad question and everyone is bound to lie in varying degrees. It's not their responsibility to tell you the truth, but yours to extract it correctly. And this book can teach you how.
Learn the path Tony Hsieh took at Zappos, which he joined and became CEO after selling LinkExchange to Microsoft, to grow the company to over $1 billion in gross merchandise sales in less than ten years. A great book on creating the a strong and customer-oriented company culture.
This book is a marketer's take on how influential blogs are in our lives become, and why that's something to worry about. Ryan Holiday outlines the parts of the internet that is broken, and includes detailed stories and confessions of his own on how he gamed the very same system to generate press for his clients.
Another fantastic book by Ryan Holiday where he uncovers that there is a defined formula for success that is timeless, and you can follow it too. To quote Marcus Aurelius, "The impediment to action advances action. What stands in the way becomes the way."
An autobiographical account of the rise of Sam Walton, founder of Walmart and Sam's Club, to the pinnacle of the American retail business by building the Walmart, which went on to be #1 in Fortune 500 and brought more than $100 billion in wealth for his wife and family.