Instruct: Classify Amazon reviews into positive or negative sentiment
Query: You don't need to be a math wiz.

For math phobes Richard Kochs' The 80/20 Principle is a great intro and explanation of one of the key insights to economics and how thw real world works. After reading this book I've become interested in tackling a more advanced treatment of this subject, and of the work of Vilfredo Pareto.