Each of the six native speakers has contributed audio essays which have then been transcribed for study.
Bonus: Free audio tracks available to download and stream from www.lingualism.com.
Each “segment" (audio essay chapter) contains:
1) exercises to sharpen your listening skills and increase how much you can understand, whatever your level
2) in-chapter answers to the exercises (no having to flip back and forth to the back of the book)
3) a voweled transcript of the audio with side-by-side English translations
4) cultural and linguistic notes
5) web links to articles and videos related to the segments