Joomla! Australia › Get involved
If you would like to get your hands dirty with code bug squashing is a great place to start. Go to developer.joomla.org where you can find the resources and information about how you can start getting your hands dirty with the Joomla! code.
The general process around bug squashing involves Reading the issues and bugs that have been submitted by other uses potentially fixing some of these bugs in the code, and then testing these patches that have been created to fix these bugs.