Using the Bosch GSR18V - 755CB25 drill/driver is easy. First, insert the battery into the tool. You can choose between high - speed and high - power settings depending on your task. For quick drilling, use the high - speed setting (0 - 2,100 rpm). For tougher jobs that need more power, switch to the high - power setting (0 - 480 rpm). When using the drill, make sure to hold it firmly with the side - assist handle to prevent slipping. Also, take advantage of the LED light to illuminate dark areas. Before you start working, set the 25 + 1 precision clutch according to the type of fastener you're using to avoid damaging it. Regarding maintenance, keep the drill clean. After each use, wipe it down with a dry cloth. When not in use, store it in the carrying bag provided. Don't overcharge the batteries. The charger has built - in protection, but it's still a good idea to unplug it once the batteries are fully charged. Also, avoid using the drill in extremely hot or cold environments as this can affect the performance of the tool and the batteries.