Using the Einhell TE - AP 1050 E reciprocating saw is straightforward. First, make sure it's plugged into a 230V, 50Hz power supply. You can adjust the blade speed according to the material you're cutting. For wood, you can use the provided wood blade right away. If you need to cut steel, remember the cutting depth is 20mm. The swivelling saw head can be adjusted to reach difficult spots without moving your body. To change the blade, it's tool - free, just follow the simple mechanism. When using the saw, always hold it firmly by the large soft grip area. Make sure the soleplate is adjusted properly for the best blade performance. As for maintenance, after each use, clean the saw to remove dust and debris. Check the blade regularly for wear and replace it when necessary. Keep the saw in a dry place. If you have any issues, refer to the product manual. And don't forget, it comes with a 24 - month manufacturer warranty.