This document discusses contributing to open source projects. It begins by defining open source as publicly available product code that is free to use and modify under certain licenses. It then addresses common myths about who can contribute and lists some basic prerequisites like having a computer and Git skills. The bulk of the document outlines various ways for non-developers to get involved, from verifying bugs to documentation to translations. It emphasizes that contributions can be made from home, work or during sprints. It provides tips on finding mentors and projects as well as acting helpfully within open source communities.