One of the mysteries of getting around the piano is how to use only ten fingers to play all those tunes. On the full length piano there 88 keys and someone just starting to play piano could not be expected to be fluent in performance.
So what does it take?
The answer is attention to fingering. You start out by learning how to use those ten fingers over ten keys, and with lots of practice, you extend the rules to include more and more keys.
It requires the correct posture while sitting before the piano, sitting on a stool or chair of the right height, and positioning the fingers so that the fingertips can touch and depress the notes fully. The wrists must be free of tension, since you are going to have to rotate them, and elbows must be slightly away from the body.
Mastering the movement up and down the keyboard requires practice of scales, arpeggios, chords. The piano consists of repeated patterns in octaves.
Learning to play is not only an exercise for the fingers, but also an exercise for the brain. What you are doing is thinking what key to play and directing the fingers to actually play it. Over time this activity of directing fingers causes you to develop a skill that allows you to express the music you want to hear.
Most people say it is harder than you think, but if you love music and really want to play, doesn’t it deserve your time and effort ?