Mac OS X Leopard Phrasebook: Essential Code and Commands

This book is good if you know nothing about Unix in MacOS X and you would like to start learning it. It takes you step by step introducing you to the different concepts of Unix and how to use the Command Line Interface (the Terminal.app). However, it seems that the author wasn't sure for what public he was writing, for MacOS X users interested in looking under the hood of their Macs, or Linux and Unix users trying to switch to Apple. Of the two, I imagine the former would benefit the most from reading it. In any case, if you're an experienced Mac user who already has ventured into Unix and the Mac Terminal (which is my case and probably of many Mac users really seeking to get a grasp of Unix), you'll learn relatively little from this brief book. Nonetheless, I don't regret having bought it, since it's helping me to order my learning process and I imagine I'll be able to use it as a quick reference guide in the future.