Using the DeWalt DCKO86M1 Combo Kit is easy. First, charge the DCB204 battery with the DCB112 charger. Once the battery is charged, insert it into either the DCPS620 Pole Saw or the DCPH820 Pole Hedge Trimmer Head. When using the pole saw, extend the pole to reach tall limbs and start cutting. The saw can reach up to 15 feet and gives you up to 96 cuts per charge. For the hedge trimmer head, adjust the 7 - position, 180 - degree articulating head to the right angle for trimming tough overgrowth. It can reach up to 12 feet. As for safety, always wear protective gear like gloves and goggles. When not in use, store the tools in a dry place and keep the blade sheaths and bar sheath on. To maintain the kit, regularly clean the blades and check the chain tension of the pole saw using the tensioning wrench.