Using this desk lamp is a breeze. To turn it on or off and adjust the brightness and color temperature, just touch the sensitive button on the lamp. You can easily find your preferred lighting mode, and the lamp will remember your last color temperature setting. For charging your devices, simply plug them into the 5V, 2.1A USB port. When positioning the lamp, use the adjustable shade and long counterbalance arm to set it at the right height and angle, anywhere from 4' to 18'. Remember, this lamp doesn't need assembly, so you can start using it right away. It's suitable for both home and commercial use. To keep it in good condition, wipe it gently with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials as they could damage the shiny satin brass finish. If you have any issues, don't hesitate to contact our customer service.