So sit back and relax and soak it in. Down below I've broke it down in sections to try to make it easier. Gain is very important to your audioscope. Depending on the music your playing and where you set your gain is how it will react. You cannot reverse 0 gain.
Offsets are two lines.
Left and right sides of the channel. On the settings one number is positive and one number is negative. You can use Hex numbers or the actual name of the color. You can also make your bgcolor the same color as your background and it becomes transparent. They can be the same color or they can be a different color.