Here are some quick fact news sites and timelines on the history of Cameroon:
BBC News-
Cameroon Country Profile: http://news.bbc.co.uk/2/hi/africa/country_profiles/1042937.stm
Timeline: Cameroon's Key Events: http://news.bbc.co.uk/2/hi/africa/country_profiles/1021488.stm
CIA World Fact Book:
https://www.cia.gov/library/publications/the-world-factbook/geos/cm.html
US Department of State:
http://www.state.gov/r/pa/ei/bgn/26431.htm
and... (of course) FIFA:
http://www.fifa.com/worldcup/teams/team=43849/index.html
Cameroon "music and images":
http://www.youtube.com/watch?v=YpckHMZZGsQ