BASIC SKILLS NECESSARY You should already have basic crochet skills, ie. single crochet, half double crochet, double crochet. You will also need to know how to make a magic ring to start the hat, which is SUPER easy. If you don't know how to make one, just check YouTube, that's where I learned :) Type it in their search bar and you'll get a ton of videos. SIZING / FINISHED MEASUREMENTS Sizes range from newborn to adult.