
Personally, I often find a bunch of the classics and the so-called, "Best Movies Ever Made" rather boring. That said, I'd rather watch 12 Angry Men over and over again than The Avengers. Nonetheless, simply watch movies. Watch good movies, watch bad movies, watch the classics, such as the movies from A.F.I.'s "100 Greatest American Movies" list, watch the movies you hate, watch movies from other countries, watch movies about other countries, watch indie films, watch blockbuster summer-popcorn movies... You get the point?

Andiamo al cinema!
Watch Hitchcock, Scorsese, Rodriguez, Tarantino, Fellini, Coppola, Danny Boyle, Zac Snyder, Linklater, De Sica, Fernando Di Leo, Terry Gilliam, John Woo, John Waters, David Lynch, Sergio Leone, Kubrick, Fincher, Peckinpah, Burton, The Coen Brothers, etc. Watch them all. Those are just some of my personal favorites.
Buy Blu-rays and DVDs. Watch the special features: the making-of documentaries, the commentaries, the outtakes. Watch movies about movies and about movie making. Watch movies and learn.