[Pharo-dev] Where to start contributing

As a fairly experienced Smalltalk programmer but a very new user of Pharo, Where do you guys suggest me to start contributing? To be more specific, there are parts of the system I don't know, and practices and conventions of Pharo that I don't grasp yet, so it seems that work that can be done withour relying on that knowledge would be more suitable for me. I'm open to a pair programming session via Skype/Teamviewer or other medium. For example, I was contemplating on defining the About text for the Versionner in light of the recent discussions.