You can contribute to the project in a number of ways. Code is always good, bugs are interesting but tests make your famous!
Bug reports or feature enhancements that include a test are given preferential treatment. So instead of voting for an issue, write a test.
We use sphinx to build the docs. make html is your friend, see docstrings for details on params, etc.
If you encounter a bug or some surprising behavior, please file an issue on our tracker