You need to watch
--- Phase 1:
1- Iron Man (2008)
2- The Incredible Hulk (2008)
3- Iron Man 2 (2010)
4- Thor (2011)
5- Captain America: The First Avenger (2011)
6- The Avengers (2012)
--- Phase 2:
7- Iron Man 3 (2013)
8- Thor: The Dark World (2013)
9- Captain America: The Winter Soldier (2014)...