Developers in the PHP community work on really cool stuff. Whether it's a full-stack framework, CLI tool, ORM, or single-purpose library, developers are contributing code, filing issues, writing docs, adding tests, fixing typos, and more. Don't be afraid to jump in and help! OK, maybe it is a little intimidating at first, so that's why we will discuss everything you need to get started. We'll talk about open source in general, licenses, Git, GitHub, pull requests, autoloading and Composer, testing , project communication, documentation, and... well... that's probably plenty.