Some useful revision sites/reading:

http://www.mediaknowall.com/as_alevel/alevel.php

http://www.bbc.co.uk/bitesize/intermediate2/modern_studies/government_and_decision_making_in_scotland/role_of_media/revision/1/

http://www.aqa.org.uk/student-support/for-students/revision - general advice on revision

http://www.bbc.co.uk/filmnetwork/films/p00932wj - great clips!