Using your Audio - Technica ATN3600LC conical replacement stylus is easy. First, make sure your turntable is turned off. Gently remove the old stylus from your turntable's cartridge. Then, carefully insert the new ATN3600LC stylus into the cartridge until it fits securely. When you're ready to play records, turn on your turntable and lower the tonearm onto the record. For best results, start the record at the beginning. As for maintenance, it's a good idea to clean the stylus regularly. You can use a stylus brush to gently remove dust and debris after each use. Avoid touching the stylus with your fingers as the oils from your skin can damage it. Also, store the stylus in a safe place when not in use to prevent it from getting damaged. If you notice any decrease in sound quality, it might be time to check the stylus for wear or damage.