Using this knife is a breeze. To open it, simply apply a bit of pressure on the liner lock and flick the blade open. When closing, hold the blade firmly and gently push the liner lock to release it. As for safety, always keep your fingers away from the blade when opening or closing. Also, don't use it for heavy - duty tasks that might damage the blade. For maintenance, after each use, wipe the blade clean with a dry cloth. If it gets wet, dry it thoroughly to prevent rust. You can also apply a light coat of oil on the blade from time to time to keep it in top condition. This will help maintain its sharpness and ensure it lasts for a long time.