Instruct: Classify a review into positive or negative sentiment.
Query: A thinly veiled ad for "Baby Signs"...

..most of the practical advice is stuff anyone who keeps up with the popular press is already aware of -- e.g. reading to your child is good, etc...the underlying purpose of the book, I suspect, shows up in chapter five where the authors excitedly announce "Parents wowed by babies' sign language"...of course, the authors started "Baby Signs" and sell "baby Signs" stuff by the truckload...but I guess that doesn't affect their opinion...