I'd like you to finish reading "Othello" at Christmas. Try to do the exercises on every chapter as well, I'll post the key to the remaining ones in January. When coming back from holiday, we'll read the last chapter, number 10, in class.
In this video from vimeo.com, you can see how the Joffrey Balley in Chicago talks about their interpretation of Othello and Desdemona. They render the meaning of the play into movement and it might help you understand the text.
I wish you all Merry Christmas!