Chloe This book haunted me. It crept into my bones and it is simply a great novel. It is painful and describes things that may strike others as "not very nice" - but she writes all her work with passion and conscience. Why read a review - read the book and decide yourself if it's great or not. Reviewers are only readers with a place to share opinions. We are all reviewers if we read and think about our reading.
Orinoco Womble (tidy bag and all) There are many detailed reviews of this book right here on Good Reads. Right there, under the blurb. A lot of them discuss the symbolism etc. Scroll down and read a few. I have no idea what you personally consider "useful" but there's surely something for just about everyone.