Using these ChiaoGoo Knit RED Circular Needles is easy. Just start by threading your yarn through the cable and onto the needle. You can use them for all sorts of knitting projects, like scarves, hats, or sweaters. When you're knitting, the smooth red nylon coating on the cable will help the yarn slide easily, so you can work faster. As for care, keep them away from sharp objects that could scratch the smooth surface. After use, you can simply wipe them with a dry cloth to keep them clean. Store them in a dry place to prevent rusting. And remember, they come in different sizes and lengths, so pick the one that suits your project best.