We have been using our hands all our lives but when we begin to play the piano, we realise that in most of the activities before, we used the whole hand. For instance, picking up a ball, washing our face, using a spoon, holding a banana are just a few of the ways we use our hands.
When it comes to making music on the piano, the most important lesson we have to learn is that of separating the fingers and mentally commanding them to do different things. For the first time we understand the characteristics of each finger. Look at them !
We learn which fingers are stronger, how flexible they are, how to use only 10 fingers to play across 88 keys, how to go from black notes to white notes, all the while aiming to make beautiful music.
There are basic guidelines for everyone, but you need to know your own hands and particularly your fingers so that when they touch those keys you hear the music you expect, coming from fingertips.