Music is written on what is called a staff, which consists of 5 lines and the 4 spaces between those lines.
Music for the guitar is written in treble clef. Treble clef is also referred to as the G clef with the center of the clef circling the G note on the 2nd line up.
Music is divided into sections called measures by
vertical lines called bar lines.
At the end of a song is a final double bar line
which indicates the end of the piece.
A repeat sign is used to play a section of music
again. ( Looks the same as a final double bar line only
with 2 dots. )
Here is the dumb little saying to remember the names of
the notes on the staff. Avoid it as much as possible.
