There are 2 basic kinds of clefs. The clef you will see on your music
depends on what instrument you play.
Treble Clef
Bass Clef
You might wonder why there are 2 different clefs. The reason is that
most instruments using the bass clef usually have a lower pitch
(sound) and regulary play low notes. If they were to use the treble
clef the notes would appear so far below the staff it would be hard to
read.
Here are the the names of the notes for both clefs. Although you only
really need to know 1 or the other, it is good practice to know both.