First off, thanks for your interest in Budgie! Budgie is an experimental syntax that provides a unified way to describe code. It's very new and very untested, so don't expect everything to work.
Development respects the GitHub way of life. Any changes should have an issue filed before a pull request is sent from a repository fork.
Issues tagged with #hacktoberfest are recommended starting points for new contributors. Feel free to tackle any other tagged issues if you're feeling confident!
See development.md for documentation on working with the Budgie source code.