You feel free to ask questions as a new Github issue. Please do not comment in an existing or old issue unless you're the author or you're sure its directly related.
You can also use the github discussions feature. If your question is implicitly a bug/feature request then please create a new issue.
Edit applicable .po files in the /locale directory. Please do not edit the .pot file directly. Then send a PR.
The UI has strict minimally focused design. For contributions please try to understand the existing design language as much as possible.
Large scale automated edits will likely be rejected.
For major new features please discuss with maintainers first.
Other areas for contribution could include website design, promotion and documentation.