Using the DeWalt DCK427D2 combo kit is a breeze. First, charge the 20V MAX* 2 Ah batteries using the included charger. Once charged, insert the battery into the tool you want to use. For the drill/driver, select the appropriate drill bit for your task and start drilling. The 2 - finger variable trigger makes it easy to control the speed. The impact driver is great for tightening or loosening screws. Just attach the right bit and you're good to go. The reciprocating saw can cut through various materials, but make sure to use the correct blade. The LED work light is handy in low - light areas; just turn it on. When not in use, hang the tools on the integral hook for easy storage. Remember to keep the tools clean. After each use, wipe them down with a dry cloth. Store the batteries in a cool, dry place. And if you're not going to use the kit for a long time, remove the batteries from the tools to preserve their lifespan.