repeat sign
A double bar line with two dots. Go back to the matching start-repeat sign (or to the beginning) and play the section again.
first and second endings
Brackets marked 1. and 2. Play the 1st ending the first time, then repeat; the second time, skip it and play the 2nd ending.
D.C. (da capo)
Italian for "from the head": go back to the beginning.
D.S. (dal segno)
Italian for "from the sign": go back to the segno sign.
Fine
Italian for "end" (say FEE-nay). Where the piece ends after a D.C. or D.S.
coda
Italian for "tail": a separate ending section, marked with the coda sign (a circle with a cross).
segno
Italian for "sign" (say SEN-yo): a slanted S with a line and two dots that marks where a D.S. returns to.