This document provides information about different types of sewing machines. It begins by explaining the basic functioning of all sewing machines and then lists and describes 14 specific types of machines including plain/regular, overlock, chain stitch, feed arm, flatlock/interlock, Kansai special, buttonhole, button attaching, eyelet hole, bartack, snap attaching, blind stitch, basting, and zigzag machines. It also includes images of some of the machines and ends by listing brand names of popular sewing machines.