Can't or don't want to?

I got into a project starting out with translations. Then community support. Then wrote a web interface to the desktop/server application. Then got into the project itself.

Many projects have a contributing document or page with pointers. In general, being part of the community, providing information or support, improving documentation, or the bug tracker (reproduction, labeling, discussing/guiding), translating.

What can be done and what makes sense varies a lot depending on project size and popularity too.