The second edition of “Mastering the American Accent” just became available for sale. You can buy it on Amazon or wherever books are sold. It has a lot more practice exercises for syllable stress and word stress and sentence rhythm. These are very important skills to learn if you want to speak with a natural sounding accent. Also, the audio is downloadable now. (instead of CD’s). There are three hours of additional audio. All the vowel sounds of American English are covered in detail.