Instruct: Classify Amazon reviews into positive or negative sentiment
Query: An excellent source for learning the craft of writing

I don't know what book Michigan Writer read, but I thought that Sherry Garland's book on writing was excellent. I'm far from a beginner (numerous magazine stories, chapter books, novels published), and I still learned new things from this book. I also found it inspiring -- here's where you learn what you need to know. That's a much better inspiration than reading a book about writing, smiling and punching the air and saying "Yeah!", and still not knowing what to do next. Sherry Garland is an award-winning author. Read her book and then do what she says. She's a pro!