This document is a handbook for new employees at Valve, a video game company. It provides an overview of Valve's unique flat organizational structure, where employees choose their own projects and there are no managers. It discusses how employees should determine what projects to work on by finding areas where they can add the most value. It also covers peer reviews and compensation at Valve. The overall goal is to help new employees understand Valve's non-traditional approach and feel empowered to contribute in a way that best uses their skills.