Finding the key:
This key signature has three sharps. The last sharp on the right is G#.
Go up one-half step. That is the key; A.
Study and play the A Major scale . Say the pattern of steps as you play.
Right hand fingering: 1,2,3,(thumb under) 1,2,3,4,5.
Left hand fingering: 5,4,3,2,1,(third finger over) 3,2,1.