I have just finished watching the complete season of The Sopranos, where to go from here?

I think that show is fantastic, yes i know i'm 5 years behind, but i just got into it recently and really enjoyed watching it. I am very disappointed that it has ended the way it has, but i believe the theory that he was shot in the end. I wished there was more to this story that just 6 seasons, and im not sure what to do from here. I want more of these thrills and storylines and don't know how to get it. I have already seen the other mobster movies, Goodfellas, Casino etc. So what can i do from here now that it's finished, it just dosent feel the same anymore. I Havent seen the godfather though, will i get the same level of exitement from that movie? I REALLY LOVED THE SOPRANOS!