Using this Bosch random orbit sander is easy. First, charge the CORE18V 4.0 Ah compact battery with the included charger. Once it's charged, insert the battery into the sander. You can choose to use the dust bag for mobile dust collection or attach a vacuum hose to the tool's interface. Turn on the sander using the easy - to - reach on/off switch. Start sanding by gently placing the sander on the workpiece. The soft - start technology will ease you into the sanding process. You can adjust the speed according to the material you're working on. When you're done, turn off the sander and remove the battery. As for maintenance, keep the sander clean. After each use, empty the dust bag or clean the dust collection system if you're using a vacuum. Check the sanding disc regularly and replace it when it's worn out. Store the sander in a dry place to prevent damage. Make sure to follow all safety instructions provided by Bosch to avoid any accidents.