ReWork shows you that you need way less than you think to start a business, explaining why plans are actually harmful, how productivity isn't a result from working long hours, and why hiring and seeking investors should be your absolute last resort.

The author of ReWork, Jason Fried, is the co-founder of Basecamp, the first Ruby on Rails (a programming language) application ever, originally created by co-author David Heinemeier Hansson.

Basecamp is also the name of their project management and collaboration software.

It gives teams everything they need to get stuff done, from chats to message boards, to-do's, timelines, reminders and folders.

It's over 10 years old already, but thanks to keeping his company lean throughout the years, Jason has managed to grow it into a million-dollar software product.

In 2010, Fried and his co-author decided to publish some of the principles they relied on to run Basecamp, and ReWork was born.