Make sure you have a GitHub account and that you are logged in (your user avatar should appear at the top right corner).Open a web browser to the GitHub project page (i.e.If you don't already have a fork of the repository you can create one. This article explain how to work with a repository that you have only read access using Visual Studio. One of them is the Firefly-doc repository which has all the developers documentation. GitHub is a great place for open source project that you can contribute to. Working with GitHub Fork in Visual Studio