At risk of repeating the other commenters up-thread, the best thing you can do to get started is use the code. Eventually you'll hit a bug or an undocumented behavior, and at that point you are the most-qualified person to diagnose the situation.
Even if you can't fix a bug you run across, reducing it to a test case or a demo script is massively useful.
Finally, don't underestimate the value of a beginner in reviewing documentation. It's really easy for experienced users to look right past all the background "well, you should just KNOW this" information they're carrying around.
Even if you can't fix a bug you run across, reducing it to a test case or a demo script is massively useful.
Finally, don't underestimate the value of a beginner in reviewing documentation. It's really easy for experienced users to look right past all the background "well, you should just KNOW this" information they're carrying around.