Damn, no wonder there are so many fat bastards out there.
There is no “secret” to losing weight, its simple.
There is one thing you need to know, your total daily energy expenditure* (TDEE), eat less than this and you will lose weight.
Get yourself a calorie counting app like Myfitnesspal (probably the best one)
3500 calories = 1 lbs of fat, aim for 500 calories less than your TDEE per day and you will lose roughly 1 lb a week, any more than this and you risk losing muscle too.
You will need to eat a healthy well balanced diet so your body gets the macro and micro nutrients it needs. Low calorie high fibre foods are a must (lots of vegetables, salad etc) you can eat more of them so you will feel full for longer.
Also no simple carbs, only brown grains.
* Plently of websites with calculators to work this out for you.