Using addi Turbo Circular Needles is easy. Start by threading your yarn through the needle tip and begin your knitting as usual. The smooth nickel coating helps the yarn move freely, so you can work quickly. When using these needles, keep in mind the non - standard sizing of some smaller needle sizes. This way, you'll pick the right size for your project. As for maintenance, simply wipe the needles with a dry cloth after each use to keep them clean. Avoid using harsh chemicals as they may damage the coating. Store the needles in a dry place to prevent rusting or other damage. Enjoy your knitting with these amazing needles!