For issues and pull requests you should view Pull Request Template and Issue Template.
In order to contribute you should create pull requests and add "Contribution" label to it.
Community Expectations are written in Code of Conduct.
In order to make notable changes, here are some quick tips:
- Label the issues correctly. Create a new issue for every problem. Give issues short names.
- If something in issue / pull requests looks too obscure. Give a comment to this issue mentioning author.
- If you understand issue / pull request, but others do not, edit issue.
- When creating pull request, be sure that it is working and build is starting.
- If you see wrong / duplicate issues, consider closing them adding appropriate labels.
- Consider following:
- Issue templates
- Pull request template
- Security vulnerability format (in security policy)