How to read keyboard staff

Each line is a black key. Press a key to find its note.

One octave of keyboard staff, with each note and its nameCCDDEFFGGAAB

C♯ sits on the bold red line. Find it and you can find everything else.

Bold red line: C♯4. Solid line: other C♯s, D♯ F♯ G♯ A♯. Dotted grey line: the gap between E and F, and between B and C.

Stems up: right hand. Stems down: left hand. Both hands share one staff.