Here are some simple suggestions:

Cut the fat!
Basically, these are the processed fats: hydrogenated fats, polyunsaturated oils that have been heated, and fats that are combined with junk carbs.

Cut the carbs!
Basically, junk carbs are low-fiber carbs, like sugar, fructose, flour, cornstarch, fruit juice. For example you should eat the whole fruit instead of fruit juice.

Cut the calories!
Most people do not need an ultra low calorie diet. But just think what your diet would be like if you dropped the processed fats and the low-fiber carbs. You'd be eating mainly natural proteins, with lots of vegetables plus whole fruits - and the odds are that you would be eating far fewer calories as well. That's the kind of calorie cutting most of us should be doing.

Eat a balanced NATURAL-FOODS diet.
By natural foods, I mean lots of whole vegetable foods for vitamins and fiber; moderate to small portions of meats, fish, seafood, and other animal and protein foods, grilled, stewed or baked; and small portions of fresh whole fruit in season. This is the diet on which for the vast majority of people, makes for optimum health.

Additionally read some healthy diet literature for motivation and have some consistent exercise activity. Any good sport will eventually help you lose weight; if there is one that you actually like engaging in, go for it.

Dieting is not easy and it takes a time. But the most important is to do it in a healthy way.

Good luck!

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http://www.weight-loss-choice.com