Using the Makita XDT14T is easy. First, make sure the battery is fully charged. The battery has an integrated LED charge level indicator, so you can easily check its status. Insert the bit into the convenient one - touch 1/4 In. hex chuck for quick bit changes. Then, select the appropriate speed using the 3 - speed power selection switch according to your task. For example, use lower speeds for delicate jobs and higher speeds for tougher tasks. If you're using self - drilling screws, the tightening mode (T - mode) can speed up the process and protect the screw and workpiece. The quick - shift mode will automatically adjust the speed and torque for efficient fastening. When working in tight spaces, its compact size of only 4 - 5/8 In. long will be very helpful. And the dual LED lights can be turned on with the independent switch to illuminate your work area. As for maintenance, keep it clean. Thanks to the Extreme Protection Technology (XPT), it can resist dust and water to some extent, but it's still a good idea to wipe it down after use. Also, don't overwork it. The STAR Protection computer controls are there to protect it from overloading, over - discharging, and over - heating, but try to avoid pushing it to the limit. And when not in use, store it in a dry place.