I need help trying to find out how to yarn over.
You just wrap the yarn around the needle as if you were making a knit stitch, except the R needle isn’t inserted into a stitch on the L needle. There’s a video on the Increases page too. It sorta seems to say that you knit the next stitch, but the YO itself doesn’t include a knit stitch, it’s just the wrap around the needle. Then you do the next stitch in the pattern.