The below might help, but to find people to ask questions about getting started, join the tidal-innards channel on the TOPLAP slack: http://toplap.org/toplap-on-slack/
You can also ask on the mailing list: http://lurk.org/groups/tidal/
The main repository is maintained on github: https://github.com/tidalcycles/tidalcycles.github.io
The SuperDirt repository is here: https://github.com/musikinformatik/SuperDirt
We'd like to add some instructions for how to interact with these but no one has done it yet. For now some bullet points as a placeholder:
- Make a dev fork
- Make and test a change
- Keep your fork up to date with the master
- Make a pull request
Likewise, we'd like to describe how to..
- Share with others for testing
- Tagging release
- Uploading to hackage (currently I think only @yaxu can do this - need to look into how to get others doing that)