Workout Help for Big Man?

I am a big guy 6'0 350 pounds. Im very athelthic and can move for my size. I workout a the YMCa everyday but i get sooo bored and dont know a true workout to folllow. My main goal is to work on my cardio. I need help setting up a full workout i can stick to and it wont bore me. please help, im looking forward to shedding this weight?