The paring knife has a short, straight edge for a cutting blade while the serrated knife has a wavy cutting blade. I prefer you use the serrated one because it doesn't slip off as easily, but straight-edged knives are better for chopping. There are two important things you will need to do while using your knife. If you are chopping food, go very slowly and hold the food with your fingers curled under. Oh, I almost forgot, always use a cutting board.
Sharp knives can cut into a kitchen counter or table.
Their slick surface can even make the knife slip while you are cutting. A wooden or plastic cutting board is the best way to go. If you have never used a knife before, get mom or dad show you how it is done. I started with a plastic one and practiced on something soft like a banana or a tomato until I got the hang of it. And always remember to keep the blade away from you and away from other people.