Using this chalk reel is easy. First, make sure there's enough chalk in the reel. You can check through the large window on the side and refill quickly when needed. Then, hold the reel firmly by the grooved case. Pull out the thick line and mark the surface you need. When you're done, carefully wind the line back in. As for maintenance, keep it in a dry place when not in use. Wipe off any dirt or debris on the case regularly. Also, if the line gets damaged, replace it as soon as possible to ensure it works well. Avoid dropping the reel on hard surfaces to prevent damage to the internal parts and the case.