Using your addi Turbo Circular Needles is easy. Just thread your yarn onto the needle and start knitting as you normally would. The smooth nickel coating will let the yarn slide along effortlessly, speeding up your knitting. When you're done with your project, simply remove the yarn. As for maintenance, keep the needles clean and dry. You can wipe them with a soft cloth if they get dirty. Be careful with the smaller needle sizes as they don't follow standard US sizing, so double - check the size before starting a project. Also, since the US 36 and US 50 needle tips are plastic, avoid dropping them on hard surfaces to prevent breakage.