Besides their use for various musical reasons, octaves
can be a great help in learning the names of the notes on the neck.
If you know the names of the notes on the 4th and 3rd strings, you
can find the name of the notes on other strings by using octaves.
If you don't know the names of the notes on the 3rd and 4th strings,
have no fear, learn here.
Octa is the Greek word for eight. An octave is a
note that is 8 steps above, or below a giving note in a major scale.
C major scale
D E F G A B C
1 2 3 4 5 6 7 8(octave)
Use this shape when finding a note on your 2nd
Use this shape when finding a note on your 1st