One of the first things you want to find on the piano is Middle C. Middle C is the most important note to learn on the piano because it guides you to every other note. Think about middle C as being your home.
Let's find the middle C is on the piano.
Find the the set of two black keys in the middle of your keyboard. You will find C to the left of the 1st black key. It is a white key. Try playing this note a couple times. Listen to what it sounds like. Now you have found Middle C. You will be able to find all other keys from here.