The role that social media had was the communication and planning of the Arab Uprisings. The participants would be able to message each other through the media. Another thing the media was able to do was raising awareness.
Hope this is right all I did was some two minute(ish) research. Hope this helps!
The rest are things that you need to write down as you do your research: document the source title, the author, the web address, and also any important points that you might find.