You’ll often see instructions in patterns that tell you to crochet through the front or back loop only. What does that mean? If you look down on a row of crochet from the top, there are two loops at the top of the stitch. Usually, you work through both loops. If instructed to work through the front loop, well, you insert your hook through only the front loop. I bet you can guess what you do if you’re supposed to work through the back loop only. 🙂
When you work through the front loops, you create a small ridge on the back of the work, and when you work through the back loops, you create a small ridge on the front of the work. Designers often use this technique to add texture to the crochet fabric.