Van der Werff, Professor of Viola at Rice University, offers a personal take on the mechanics of viola playing. Though not as comprehensive as Simon Fisher’s Basics for violin, the Notebook is similarly designed as technical exercises from which to draw for daily warm-ups and to improve specific skills. The first section addresses using the body to support the instrument and bow, with photographs of incorrect approaches contrasted with balanced use. The bow control section offers exercises to develop control of the fingers as well as refined whole-arm movements. The left hand section offers one-position exercises similar to Sevcik and Dounis, as well as shifting, double stops, and scale-pattern exercises. Blank pages of staff paper between each section allow notes and variations of the exercises. The DVD is very helpful, as some material is more easily demonstrated than explained; it shows van der Werff demonstrating many of the exercises as in a student’s lesson, putting concepts in context as movements rather than static positions. Future editions could offer DVD content via mobile and/or tablet apps. The ideas apply universally to good string playing; I recommended Notebook to teachers and players of all bowed instruments.