If MVC, ORM, and OOP don't sound like Klingon to you, you're ready to contribute to the SilverStripe codebase. We need both intermediate and expert web developers to keep the product alive and kicking. Here are a few ideas to get you started.
Submit bug reports and patches. Submitting accurate bug reports and patches is a good step to becoming a core contributor.
Join the weekly core discussions on IRC.
Help others on our IRC Channel.
Discuss new features and concepts on the silverstripe-dev Google group.
Build a small widget for people to drop into their websites.