To use this Lana Grossa Cool Merino Big Color yarn, you can start by choosing your favorite knitting or crocheting pattern. For knitting, pick the appropriate needle size based on the yarn's thickness. When crocheting, use a suitable hook. You can create various items like sweaters, scarves, or hats. As for care, it's best to hand - wash the finished product in cool water with a gentle wool detergent. Gently squeeze out the water and lay it flat to dry. Avoid wringing or twisting the yarn, as it may damage the fibers and affect the color. Also, keep it away from sharp objects to prevent snags.