Just do it. Seriously, you don't even have to know programming to contribute. Writing documentation, porting software, trying to boot on real hardware, trying

Just do it. Seriously, you don't even have to know programming to contribute. Writing documentation, porting software, trying to boot on real hardware, trying out websites with the web browser, looking for bugs in the user interface... There's no such thing as a barrier to entry with SerenityOS as long as you're motivated to learn.