The center of discussion will be on the Farcaster channel: /ottp
Here you can contribute ideas, code, design, etc. in a social setting. This is the best way to start the conversion, but if you prefer, you can fill out this quick form instead, and we can try to plug you in another way.
For those who want to contribute through GitHub.
https://github.com/opentothepublic/protocol/blob/main/CONTRIBUTING.md