Yielding a 50 isn't something that can just be done by reading a few paragraphs on Sparknotes. How many people do you think have read those paragraphs over and over again? Developing your own ideas is what examiners look for. Obviously there are elements that EVERYONE is going to write about, however it's what YOU do with those elements and how YOU interpret them; not a study guide. I will admit I read a far decent amount of study guides in order to develop extended knowledge about the texts, but when it came to writing my essays I sat down and brainstormed everything that was going through my mind about the text, about reality, about literature, quotes, links, symbols. You, and your friend, will find that discovering new thought-streams and new ideas will create grounded and enjoyable pieces of writing.