The Elements of Piano Technique by Ernest Hutcheson provides comprehensive step-by-step instructions on piano technique. The teachings of this book goes from simple finger action to more advanced movements needed to play piano literature.
The most widely used piano technique book ever written, The Virtuoso Pianist was designed to develop agility and strength in all the fingers as well as flexibility of the wrists. This revised edition is designed for intermediate level pianists, includes Exercises 1-60. Contains Hanon's original introduction.