Using these Jimmy's SmartStix Double Pointed Needles is a breeze. Just start knitting your project as you normally would. The color - coded intervals on the needles are super handy. When you need to measure your work, just use the markings on the needles instead of reaching for a separate ruler. You can easily check your gauge by counting the stitches and rows against the markings. As for maintenance, keep them in a dry place to prevent any rusting. Since they're lightweight aluminum, be careful not to bend them too much. And always store them safely to avoid losing any of the 5 needles in the set.