Good luck man. There isn't any magic secret or diet plan out there. You need a lifestyle change and not a diet or you will just put it all back on again. I have a friend that has lost over 100 pounds three different times in his life and he is bigger now than he has ever been. It isn't a diet, it is a lifestyle and something you have to do for the rest of your life.
Move more, eat less. That's all it takes.
So much this.
Diets are great to drop weight initially, but you need to have a plan in place to change your eating/exercising habits once you get there. A friend of mine has dropped 30-40 lbs about 3 different times and falls back into old patterns once he loses it.