re: anyone on here a planet fitness member

I just joined, the $10 a month membership. I am 6’2” and 180 pounds but skinny fat and out of shape. I have not stepped foot in a gym in 20 years. Main goal is to increase cardio fitness, drop some fat, get a bit stronger and strengthen my lower back. I like that the machines have instruction images and indicate the muscle group being exercised as I have no idea where to start.