Myfitnesspal has a food logging/calorie counting tool and apps for all the popular smart phones which makes it very convenient. There is also an online community for support and education. I lost 60 lbs and have kept it off. Logging your food will teach you about nutrition and particularly will teach you what foods will keep you satisfied for long periods for reasonable levels of calorie intake. Veggies, lean meats, complex carbs, good. Simple carbs, fatty foods and sugars spike your calorie consumption but don't satisfy your hunger for long if at all.