Using addi Turbo Circular Needles is easy. Just start by threading your yarn onto the needle and begin knitting as you normally would. The smooth nickel coating will help the yarn move easily along the needle, speeding up your work. When it comes to sizing, double - check the actual size as some of the smaller sizes don't follow the standard US sizing. As for maintenance, keep the needles clean by gently wiping them with a soft cloth. Avoid using harsh chemicals as they might damage the coating. Store the needles in a dry place to prevent rusting or damage to the cords. If you notice any snags on the joins or cords, handle them carefully to avoid further issues. And that's all you need to know to get the most out of your addi Turbo Circular Needles!