Using the Golz KB125 is easy. First, make sure it's properly connected to a 110V power source with the right frequency. You can use the laser pointer to accurately position the drill where you want to make a hole. Adjust the angle up to 45° using the angle device according to your needs. The drill stand is lightweight, so you can move it around easily. When it comes to the drill bit, connect it using the 1 1/4 inches UNC + R1/2 inches connection. Don't forget to connect the water source using the Gardena connection for proper cooling. As for maintenance, keep the drill clean after each use. Check the motor and the roller carriage regularly. If you need to disconnect the motor, use the quick release system (STS). Also, make sure to store it in a dry place when not in use. And always follow the safety guidelines while operating the drill.