Knit a hood on a pullover?

Does anyone know how to knit a hood on a pullover/sweatshirt? The directions are difficult to understand. Kit up straight and then?

I just knit a hood on a ponch for my SIL. It was fairly simple. Just pick up the stitches along the collar. There were a couple increases right down the back of the hood. When you get to the top of the head (I think my pattern said 13 inches) bind off and seam the top of the hood. You will want to make sure that if you are knitting in stockinette that you make some kind of border around the face so the knitting doesn’t curl. My pattern called for a 1x1 ribbing for 5 stitches. This is nice because it looks like stockingette so it pretty much disappears. You could probably do seed stitch or garter stitch as well.