Step By Step: An Introduction to Successful Practice by Kerstin Wartberg. An Exercise book for young violinists & their parents, based on the Mother-Tongue Method, with accompanying CD. This fascinating series of tutor books is closely based on the Suzuki Violin method. The series is suitable for teachers well versed in the Suzuki Method, but will also be of interest to those coming to it fresh, because of Wartberg's detailed notes.