Let's have a talk, "friend".
1) It isn't a song. A song is a piece of vocal music for singers. Please call it a masterpiece, a piece, a composition, but don't call it a song unless it has lyrics.
2) Who is your teacher? Why don't you ask him/her suggestions?
3) Many people on Y!A cannot give you tips unless they either know you, see you play, or at least know what you have played recently.
Try pulling out the sheet music for this piece, and read it over several times: http://imslp.org/wiki/Etudes,_Op.25_(Chopin,_Fr%C3%A9d%C3%A9ric)
Etude #11 in A minor.
Best regards.
EDIT: I concur with Petr B, you are deadly wasting your time. I highly disbelieve that you "need" to learn it. What are the consequences if you "don't"? Who assigned this for you, yourself? I 99% believe that you assigned it yourself, because I bet no GOOD piano teacher would assign something beyond one's difficulty.
Go back to playing your "just-right" repetoire. Stay away from this etude at all costs.
EDIT:
@EvenADuckCanHear - Your answer - "gotta luv M doin da flip flop flip flop
1st try dis etude, den agree wit peterb -
what up M?M for monkey C monkey Dew??????"
What sort of English are you using? "M" is for "M", okay? You're showing bad manners and low intelligence in that sort of answer. What are you, a robot?? I'm not a monkey, I am a human!!!!! And I don't spend my time doing the "flip flop".