Can you believe it? It's actually time to start writing the code for your gem! Now, in this part of the guide you'll be more "on your own" than up to this point. I don't know what kind of open source library you're writing, whether it's an extension to an existing library, a simple utility, or a complex, sprawling project that will change the face of development forever. What I do know, however, is that there are some common things that you may want to do that have community best practices attached.