[etagwerker]

This is usually how I do it for libraries:

* Read the README.

* Install it and start using it with a couple of sample cases. That will give you an idea of what it does.

* Read the test suite. This will give you a better idea of what the library does.

* Look at the directory structure. This should tell you where things are.

* Start reading the core files.

* Start looking at open issues. Try to solve one by adding a test and changing the code.

* Submit a pull request.