Using this Sony BRC - 300 camera is easy. First, make sure you have a suitable power supply as the camera doesn't come with one. Connect the camera to your surveillance system or the device you want to use it with. Then, use the controls to adjust the pan, tilt, and zoom functions according to your needs. When it comes to maintenance, keep the lens clean with a soft, dry cloth. Avoid using harsh chemicals as they may damage the camera. Also, store the camera in a dry and cool place when not in use. If you have any issues, check the connections first before seeking further technical help.