Using the Bosch GIC4 - 23C is quite straightforward. First, insert the battery into the device and charge it fully if it's not already. Then, turn on the camera using the clearly marked buttons. The 4 - inch display will show you what the camera sees. You can use the orientation indicator to figure out the direction. To take a photo, just press the corresponding button for more detailed documentation. When you're done with the inspection, use the USB - C cable to transfer the photos to your computer. As for maintenance, keep the device clean. Wipe the display gently with a soft cloth. Avoid exposing the camera cable to extreme conditions, as it has an IP67 rating but still needs proper care. Also, when not in use, store the camera in the carrying case to protect it from damage. And don't forget to charge the battery regularly to ensure long - lasting performance.