Using this knife is easy. Just unlock the liner lock and open the blade. You can use it for various tasks like opening packages or cutting light materials. When not in use, make sure to close the blade and lock it to prevent any accidental injuries. To keep your knife in good condition, clean it with a dry cloth after each use. Avoid using it on extremely hard materials as it may damage the blade. If it gets wet, dry it thoroughly to prevent rust. You can also periodically apply a small amount of oil to the moving parts to ensure smooth operation.