Yarn over at the beginning of a row

I have a shoulder shawl pattern (Knit N Style August 2006) that starts each row with a yarn over. I’ve been knitting for many years but have never come across this.

Can anyone enlighted me on how this is done?

Insert your needle into the first stitch on the left needle, then bring the yarn under the right needle from the back, so you’re knitting that first stitch with the yarn in front. As you knit, the yarn will go over the right needle and create the yo.

I hope that’s clear. I had to do this on a shawl–it makes a nice loop on the edge.

Thank you for the quick reply