Using the Behringer Pro-800 is a breeze. First, power it on and connect it to your audio setup. You can start tweaking the knobs to shape the sounds. For the oscillator settings, use the 2 VCOs per voice to create different tones. Play around with the unison mode for those thick lead and bass sounds. The arpeggiator and sequencer are great for creating unique patterns. To save your favorite sounds, use the 400 user program memories. When it comes to maintenance, keep it in a clean and dry place. Avoid exposing it to extreme temperatures. If you're not using it for a long time, turn it off and unplug it. Also, be gentle when adjusting the knobs and buttons to avoid any damage. And always follow the MIDI connection instructions carefully to ensure smooth operation.