Use any 2 power cords to begin with to see which tension you like best. It should be on the lighter side as a beginner.
Start by placing hands on the foot rest and your knees on the middle of the Glideboard with your head looking down on the Headrest. From here, push back on the Glideboard until legs are fully extended, knees are off the Glideboard and the balls of your feet pushing down until the plank position is achieved. Hold the plank position 30 to 60 seconds.