Structure for your letter or PowerPoint:
1) Background of the war - how it started
2) Timeline of the war - major events
3) Results of the war - what did British do? why were colonists angry?
Resources for your letter:
Timeline of events leading to the Revolution: http://www.historyplace.com/unitedstates/revolution/rev-prel.htm
The Sugar Act: http://www.masshist.org/revolution/sugar.php
Timeline of the French and Indian War: http://www.pbs.org/thewarthatmadeamerica/timeline.html