I discovered this book in the library, and have since used it to teach classes as well as individuals. Some of my students have even used this book as a self-teaching guide. It is an absolutely wonderful pronunciation guide for any level of ESL student! THE GOOD: The book employs a wonderful system for helping students learn the sounds of English. It has lists that differ by only one sound (ex. Sip & Zip) to illustrate the differences between similar sounds. It then tests the learners' hearing by having them choose which word they hear in a sentence where either word would fit! It goes on to provide practice with many words, sentences and dialogues. Then, after an activity, it summarizes all the ways that the sound can be spelled. THE BAD: There really isn't much! If anything, I would say that the mouth illustrations at the beginning of each chapter aren't really that helpful. And sometimes my students question me about the phonetic spelling that is used to introduce a sound. OVERALL: This is an absolutely wonderful book that can be used with anyone - from true beginners to advanced students! I would recommend it to anyone teaching or learning pronunciation. If you are going to use it to learn on your own I would recommend getting the cassette tapes.