Some amazing folks over at GitHub have dedicated all their time to supporting GitHub users in discovering and learning about all the features that GitHub offers. Beyond the static documentation, the GitHub Training Team offers Learning Labs.
Learning Labs are a self-guided, automated tutorial that actually has you doing the actions on GitHub.com and not just watching a video or reading a tutorial. You can find great ones for GitHub Pages, all GitHub fundamentals, Markdown, HTML, and even running your own Open Source Community. Head over to https://lab. github.com, authenticate with your GitHub credentials, to try some of these outlearning Labs.
Source: Guthals Sarah, Haack Phil (2019), GitHub for Dummies, Wiley.