Using the Bosch GEX12V-5N sander is quite simple. First, make sure you have the right sandpaper attached to the hook-and-loop backing pad. You can use the speed selector to adjust the speed according to the material you're working on. When you're ready to start, just press the easy-to-reach on/off switch. The soft-start technology will gradually bring the sander up to speed, so you don't have to worry about sudden jolts. As you sand, try to keep the sander flat on the surface to get an even finish. For dust collection, you can either use the included dust bag for mobile work or connect a vacuum hose to the interface. When you're done, turn off the sander and remove the sandpaper. To maintain your sander, keep it clean. Regularly check the dust collection system to make sure it's not clogged. Also, store the sander in a dry place. And remember, this sander is designed for professional use, so use it with care and follow all safety instructions.