Thanks for wanting to contribute to Furiko! There are lots of ways to start contributing.
Check out the Contributing section on the website, which describes high-level tips and guidelines for contributing to the entire Furiko project.
To get information on how to start developing and contributing specifically to this repository (furiko-io/furiko), see the Development Guide for a comprehensive guide on doing so.
We use GitHub for issue tracking and collaborative version control. For more information about how to submit a pull request, you can refer to GitHub's guides.