The best thing you can do before this examination is to keep yourself "inside" of language and "surrounded" by language.
Practice listening and speaking and so much more
http://www.bbc.co.uk/worldservice/learningenglish/index.shtml
http://www.bbc.co.uk/iplayer/
FCE Practice Tests http://www.flo-joe.co.uk/fce/students/tests/tsindex.htm
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Improve your reading skills, general knowledge and vocabulary
Daily Mirror
USA Today