Mega Fat Loss Secrets

I am 6′ and 200lbs. I am joining a gym and want to know what’s best for exercise and weight lifting for just normal toning up and maybe some belly loss. The gym has treadmills, elipticals, etc and weight area that I know nothing about…Any help in both or either is appreciated! Including how often a week to do it and any rotations. I’ve never worked out before, but am generally not weak.