For my full course on how to learn to play the piano for beginners, go here:
3 different intervals are shown on the piano: the half step (also semitone or half tone), the whole step (also whole tone) and the octave.
This is a sample lesson of the course 'Learn to play the piano from scratch', a piano course for total beginners: learn the piano, music theory, reading music and improvising with lots of play along tracks.