Practical Method for Beginners, Op. 599. Czerny's piano exercises have been revered since they were created. Together with Hanon's The Virtuoso Pianist and Czerny's own The School of Velocity, Czerny's Practical Method for Beginners on the Pianoforte is among the most widely practiced set of exercises in the piano repertoire.
Definitely the best for beginners! If you want to improve hand independence and your sight reading skills, then this book may help. Unlike other piano finger exercises, Czerny’s works did not just focus on the exercises intended for finger dexterity and agility but he made sure that the pieces are musical. This makes practice more fun and relaxing.
Each exercise is written in a way to help you master a particular technique. Don’t attempt it without a teacher; there are a lot of wrong ways to play this. Musically, it’s somewhat boring. Best practiced alongside something more musically rich to keep you interested in your practice.