Using the CCP - 22 Crank Puller is quite simple. First, make sure the bike is stable. Then, position the puller on the crankarm you want to remove. Turn the handle carefully. The fine thread and long handle will give you enough power to take off the crankarm, even if it's really tight. As for maintenance, keep it clean after each use. You can use a dry cloth to wipe off any dirt. Also, check the rotating tip regularly. If it seems to be getting stuck or isn't rotating smoothly, you might need to lubricate it. When not in use, store it in a dry place to prevent rust. And always be careful when applying force to avoid any damage to the puller or the bike parts.