understanding Macbeth

Hello, I am having a hard time understanding macbeth and need to answer 2 questions. First question. Do you think in Act one scene 1 Lady Macbeth fakes it when she faints, and also who do you feel to blame for the tragedy of Macbeth. I was going to say for the tragedy greed and ambition but need to go into more detail. thanks, clark

I don’t think that in the first scene of Act one Lady Macbeth has some participation at all. Never mind, just try to see where exactly is this, you just have to check.
However, I don’t think she fakes, because in this tragedy emotions have a great part. Everything is emotionally justified. Lady Macbeth even the more decided to commit the crime is emotionally more fragile. So, I suppose she was sincere in her act.
As for the other question, you just have to search in:
http://www.cliffsnotes.com/WileyCDA/LitNote/id-65.html
http://www.gradesaver.com/classicnotes/titles/macbeth/