Using addi Turbo Circular Needles is a breeze. First, pick the right needle size for your project. The nickel coating helps the yarn move easily, so just start knitting as you normally would. When you're done with your project, simply remove the yarn from the needles. As for maintenance, you can gently wipe the needles with a soft cloth to keep them clean. Remember, some of the smaller sizes don't follow the standard US sizing, so double - check before you start. Also, since the US 36 and US 50 tips are plastic, handle them with care to avoid breakage.