Business Classic by Guy Kawasaki is the great book for entrepreneurs. It is bit lengthy book because it covers what it takes to start the company, bootstrapping techniques, idea pitching, how to validate the idea, how to start, etc.
Built to Sell is the tale of an advertising agency which restructures itself as a service in order to teach why you should build a precise service that you market instead of building a consulting agency. It also includes on how to structure a business that is not dependent on you at its core, vital for anyone with a Startup who has an exit as the end goal, or just any business owner.
An amazing book on how to influence others, we might call “How to manipulate people so that they do whatever you want. Read this book if you want to learn how to get people to return favors, feel inclined to convert, and help you out on your path to success.
The Lean Startup speaks about a revolution in entrepreneurship, best-practice methods to create profitable companies to give it more chances to succeed. A lot of trial and error methods in the book are so well taught that if you stick to it, your chances of success increase a lot.
Traction is the Bible for Startups for making progress to get new users and customers. It covers the list of 19 traction medium which any startup could implement and succeed. It will give you a new idea about traction overtime you read it or you go through it in details.