Using these KnitPro Mindful Fixed Circular Needles is easy. Just thread your yarn onto the needle and start knitting as you normally would. They're great for both delicate lace work and regular knitting projects. When using the cables, you can take advantage of the inch markings to measure your work. As for care, keep them in a dry place to prevent rusting. After use, gently wipe them with a soft cloth. If they get dirty, you can use a mild soap and water to clean them, but make sure to dry them thoroughly. Don't bend the cables too much as it might affect their smoothness. These needles are made to last, so with proper care, you'll enjoy using them for a long time.