A front loop only stitch is the same as a regular stitch, except instead of going under both loops of a stitch, we’re going to go under only the front loop (as the name suggests). Remember, the “v” shape forms a stitch – for the front loop only stitch, go through the half of the v that is facing towards you.
I find crocheting a round in the front loop only helps to shape some of the items I make. For example – it makes a great hat brim, because it helps the yarn “turn”. I also use it in the neck and waist of some dolls to help create a structured cinch for rows that have increases or decreases on either side.