I like to see all beginning level piano students start practicing the major scales. There is a wealth of information hidden inside a scale! Knowledge of scales will help you to understand all of the major keys, along with where chords come from and how they are structured. Eventually it will enable you to understand the different types of minor keys and how they function. The melody of a song comes from the scales too. A melody is simply a scale that is rearranged to make a beautiful song or a beautiful work for piano.