How can you not understand parts? That is a key concept you need to understand to get ANY sound out of this box. Not to be rude, but it is time to read the manual a few times when you don't understand the machine's basic concepts or you will constantly be confused.
If you can't figure that out, just drum out your kick snare pattern on a track and turn off the metronome. A metronome is always going to sound cheesey with its set pattern (regardless of the sound assigned), just get something down, turn it off, and move on.