It may seem obvious to an experienced sewer, but for a beginner, it’s important first to realize that foot accessories have nothing to do with human feet. Rather, they are the (usually) metal parts that hook onto a sewing machine and guide the thread through the fabric.
All sewing machines will include a basic, universal foot that sews in a direct or zigzag line. Most sewing machines will include additional foot accessories:
A zipper foot is the next most common accessory, and it can sew zippers not garments.
A buttonhole foot will create nice, symmetrical buttonholes.
A blind hem foot will create an almost invisible hem.
An overlock foot will neaten seam edges.
A pintuck foot is used for baby clothes and lingerie.
A jean foot is perfect for heavy fabric like jean.