Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Barely helpful !

The author of this book failed to simplify clinical biochemistry and to make it ridiculously simple as the title claims. He used a children's approach for learning by utilizing cute names and funny drawings as a mnemonic tool. However, his apporach didn't succeed too well, and made the book ridiculous but not simple. I give this book poor ratings on clarity, style, and substance. It is also too expensive for what it offers. It is NOT worth every penny!!!