Hi bhandy 76 and welcome! You came to the right place. I've been quilting for about 6 years and have learned so much and gotten so much inspiration from this board. Jelly rolls are packs of fabric strips that are 2 1/2" wide by width of fabric (about 44") . A fat quarter is a quarter yard of fabric, but instead of cutting it 9" x width of fabric a yard is actually cut and then cut into fourths that are 18 x 22". Charms are pre-cut 5" squares.