There are only seven music notes; A B C D E F G. Variations of these notes become sharps and flats  which will be discussed in another lesson. Say the notes in ascending order and then in reverse. It is more difficult to say them in reverse. So in reading music, you also read notes in reverse. The C scale is written below. It starts on the note C and ends on the note C.

As notes go "higher"or up the music staff, the letter names follow the pattern of the alphabet. Once reaching the letter 'G', the note following is 'A' and continues on.

When a scale descends (goes downward), the note names go in reverse:

As notes go "lower", the letter names follow the alphabet backwards. Once reaching the note 'A', the note following is 'G' and continues.

Here is the Grand Staff, with all of the notes.

The scale above starts on a low 'E' and proceeds upward for more than 3 octaves. An octave is comprised of eight notes, where the bottom and top notes of the octave have the same letter name. The succession of notes shown above starts on a low 'E' and passes through three more 'E's.

You will notice that the "C" in the middle of the bass and treble staff's is a note drawn on a leger line. A leger line is a way of extending the range of the staff. Look at this example:

If you use the diagram of the Grand Staff from above and continue upward from the last given note (G), you will see that this note is 'C'. Leger lines can extend up above or below the staff, no matter what clef is used: