You must remember that the Audiences and Institutions unit is a case study and as such is an active, evolving topic. With that in mind, you need to keep up with events.
Playstation Magazine which I gave out as a case study has since shut down. This follows the closure of Nintendo Power, a long running Nintendo-related magazine. Both magazines were published by Future US, Inc.
A quick glance at Future's website suggests that they are concentrating their energies in the digital market, significantly updating GamesRadar, as well as launching a new weekly interactive digital tech magazine.
While I was looking through related articles I also came across this article about the fact that Newsweek is going 100% digital.
You have got to keep researching and reading. This topic is alive, kicking and is never not interesting. There is always something to learn!