Using your Deejo knife is a breeze. Just press the liner lock to open and close the blade smoothly. It's great for a variety of tasks like opening packages or cutting small items. When using, always keep your fingers away from the blade to avoid cuts. For maintenance, clean the blade with a dry cloth after each use. If it gets wet, dry it thoroughly to prevent rust. You can also apply a little knife oil to the blade and moving parts occasionally to keep it in top condition. Store your knife in a dry place, and if you're carrying it on your belt, make sure the clip is securely attached.