Using these ChiaoGoo Knit RED Circular Needles is easy. First, choose the right size and length for your project. Then, simply thread your yarn through the cable and start knitting. When using, make sure to keep your hands clean to avoid dirtying the smooth surface. Also, don't pull the yarn too hard to prevent damage to the cable. For maintenance, after each use, wipe the needles with a soft cloth to keep them clean. Store them in a dry place away from moisture to prevent rusting. With proper care, these needles will serve you well for many knitting projects.