The easiest way to connect Google Colab and GitHub for the first time is to send this notebook to GitHub. This is also how you'll save all future Google Colab notebooks to GitHub.

How do you connect a local Git repo to a remote repository your team has set up in GitHub, GitLab or Bitbucket? There are two ways to push a local project to a remote Git repo: the recommended way, ...

Documentation: README: When you create a GitHub repository it’s always best to make a README file to explain your project, how to install and use it, and any other relevant information.