How to crochet a chain stitch
Parts of the Chain Stitch
front & back loops – each stitch has a front loop and a back loop. If you crochet into the front loop only the back loop is left free, ready to be crocheted into later.
back bump - when you flip your chain over you can see the back bumps. Crocheting into the back bumps allows you to create a neat bottom edge to your work that can be easily crocheted into if you are adding a border to your work later on. Or simply allows the bottom edge of your work to look like the top edge.