This seems to essentially be Shakespeare's response to The Jew of Malta, so if you've read that, this will seem very familiar to you. However, the language used is far more memorable, the lead character more sympathetic, and the story shaped to fit a different genre. This means that it ends on a far less tragic note, and also that it secures its place in history as one of Shakespeare's masterpieces. Essentially, it is a story of failed revenge, love, and injustice. As to the edition itself, I found it to be greatly helpful in understanding the action in the play. It has a layout which places each page of the play opposite a page of notes, definitions, explanations, and other things needed to understand that page more thoroughly. While I didn't always need it, I was certainly glad to have it whenever I ran into a turn of language that was unfamiliar, and I definitely appreciated the scene-by-scene summaries. Really, if you want to or need to read Shakespeare, an edition such as this is really the way to go, especially until you get more accustomed to it.