Last Weekend I took my ISTD Salsa Associate exams in NY, LA and Cuban Style.
It was the very first session ever Held in Salsa for the ISTD.
I think that the books are great and very detailed which I was looking for. They explain the Music, the instruments, the origin, different styles, alternative Dances like Bachata or Merengue and many more. I recommend them!
They also give some teaching methods.