Book Reports / Convergence Culture by Henry Jenkins (three key concepts) - how to start? [2]

Hi guys I have a 2000 word essay due in two days and I need help getting started.
The Question is:
Henry Jenkins' Convergence Culture is based around the intersection of three key concepts: media convergence, participatory culture and collective intelligence. Using a media example of your choice, demonstrate Jenkins' concept of convergence Culture and how it can be applied to both 'old' and 'new' media.

I am have hit the usual 'Intro brick wall' - once I get passed that I will be fine though. Thanks guys.

Gianni