Using the Bosch GDX18V - 1600B12 is easy. First, make sure the 18V 2.0 Ah SlimPack battery is fully charged and inserted into the tool. If you're using bits, insert them into the 1/4 - inch quick - change hex shank holder. For sockets, use the 1/2 - inch square drive. When you start working, use the variable - speed trigger to control how fast you drive the fasteners. The LED light at the base will help you see clearly in dim areas. As for maintenance, keep the tool clean after each use. Wipe it with a dry cloth. Don't expose it to extreme heat or moisture. Also, when you're not using the tool for a long time, remove the battery. And remember, the Electronic Cell and Motor Protection is there to protect the tool and battery from overheating and overload, but still, don't push the tool too hard for long periods. Hang the tool on your belt using the belt clip for easy access when you're on the job. With proper use and care, this tool will serve you well for a long time.