Rework might sound like a weird title for a book but after reading it, you can't think of a better one. The book is a collection of short essays on running a business from 37signals' Jason Fried and David Heinemeier Hansson.
Most of the essays have been compiled from their Signal vs Noise blog and are contrarian. Initially, I disregarded the essays but was involuntarily paying more attention as I progressed and my mind was blown off by the time I was done. Some of the essays like 'Meetings are toxic', 'ASAP is poison', 'Planning is guessing' are so compelling, you feel like implementing the suggestions immediately. The book has about 90 essays and an essay spans at most 3 pages. You can finish the book in a sitting of 3 hours.
If you harbour even a slight ambition of being an entrepreneur (in any field), you must read this book.