Using the Behringer XR18 is a breeze. First, connect your audio sources to the appropriate inputs. If you're using a tablet, connect to the mixer via the built - in Wi - Fi router. Then, open the free iOS, Android, or PC app to start adjusting the mix parameters. You can control things like volume, EQ, and effects right from your device. For live performances, make sure to test the sound in the venue before the actual event. Walk around the space to ensure the sound is consistent everywhere. When it comes to recording, use the 18 x 18 channel bidirectional USB interface to directly record on your iPad or other compatible devices. As for maintenance, keep the mixer in a clean and dry environment. Avoid exposing it to extreme temperatures or humidity. Regularly check the connections to make sure they are secure. If you want to use the MIDI functionality, ensure your MIDI equipment is properly configured. And don't forget to check the Behringer website regularly for free firmware updates to keep your mixer up - to - date with the latest features.