Rohn Strong & Rohn Strong 
Learn to Crochet Top-Down Beanies [EPUB ebook] 

Create 8 top-down beanies using a handy measuring template. Every beanie begins the crown the same way: by crocheting a half double crochet circle and increasing until it measures the dimensions on the template for the size of beanie you want to make. From there, directions are included to create stylish, modern and wearable designs for everyone in the family. The best part is that these beanies work with any yarn weight, any hook size and any gauge. Each beanie in the book is made using worsted-weight yarn.