The railroad zipper is probably the simplest zipper to install. It can be identified with topstitching that is stitched on the outside of the garment that holds the zipper in place. In this version you will fist stitch on side of the zipper to one of the seam allowances, then you will topstitch the zipper in place. These courses are designed for learners planning to go into the fashion/apparel production environment. Purchase the patterns for Level 1 tutorials here: https://tinyurl.com/AAA-L1-Patterns
