The Practically Cheating Statistics Handbook TI-89 Companion Guide

This is a great task-centered guide for using your TI-89. Other guides (like the one by Kelly) embed tasks in a stats instruction guide, making it hard to just look up a function. This one avoids that fully. It isn't cluttered with context. It is well organized, with simple keystroke-by-keystroke instructions. If you're taking a stats class and just want to know how to perform tasks with your calculator ("How do I get a z-score"), this is the way to go.