There are many ways you can get involved in Qpid:

1. Use Qpid and post us your feedback to qpid-dev@incubator.apache.org
2. Participate on the mailing lists.
3. Contibute via open JIRA JIRA issues
4. Review the current code
5. Help write user documentation or wiki documentation
6. Help write user examples.

Plesae be sure to take a look at the coding guidelines for the setcion of the project that you contribute to