Casting On is the technique used to create the initial stitches on a knitting needle before you start knitting. This process establishes the foundation for your project, whether it's a scarf, sweater, or any other knitted item. There are various methods for casting on, such as the Long Tail Cast On and the Cable Cast On, each offering different benefits and appearances. To cast on, you typically use a length of yarn and a knitting needle. The yarn is looped around the needle in a specific way to form stitches. Once you have the desired number of stitches, you can begin your knitting pattern.