A common problem amoung those who use yarn in knitting or crochet, is that the yarn becomes unorganized. Some important characteristics of yarn are its weight, fiber content, color, and brand. Yarns are classified into several weights, such as fingering, sport, double knit, worsted, heavy worsted, or bulky. The weight of the yarn determines the hook or needles size that will be used when knitting or crocheting. For this reason it is important to know the weight of the yarn to be used. However, all too often the label that comes with the yarn is discarded, leaving the weight and other important information about the yarn unknown.
To organize yarn as it is purchased, consider assembling a yarn notebook. Whenever a new yarn is purchased, snip a sample of the yarn and attach it to the label that comes with the ball or skein. Attach the label and yarn sample to the receipt received when purchasing the yarn. If the label and receipt are small they can all be stapled or taped to one large sheet of paper to keep them in order. Record next to the yarn any additional information that isn't already documented. The yarn notebook method of organizing yarn for knitting and crochet, alleviates some common problems: