Using your addi Turbo Circular Needles is a piece of cake. Just thread your yarn through the needle and start knitting as you normally would. The smooth nickel coating will make the yarn glide along easily. When you're done with your project, simply remove the yarn from the needles. As for maintenance, you can wipe the needles with a soft, dry cloth to keep them clean. Be careful with the smaller needle sizes as they don't follow standard US sizing, so always double - check the actual size. And remember, the US 36 and US 50 needle tips are plastic, so avoid dropping them on hard surfaces to prevent breakage.