t6 is an "oriented-Data" platform to connect physical Objects with timeseries DB.
The easiest starting point is the Ideas List where you can find multiple ready to start nice feature requests.
Once done (including documentation, you can Pull Request to master. :-)
No specific rules. I'm not a developer myself! I'd suggest first to clone and install the IoT platform on your machine. And then contact us : author email on the package.json file :-)
Fill the issue form on github: https://github.com/mathcoll/t6/issues