^^^yeah, that's about it.^^^

If you've never chopped up a sample before. Think of it as a graphic image that you're cropping in photoshop. Say There's a picture of the 3 people, and you want to delete the people on the left and right. Chopping would kind of be like cropping. Just highlight the part you need and chop. Zoom in to get the fine details of exactly where you need it so it's perfect. Hope that helps.