Shedding weight and getting fair......pls help?

can u give me ways to she weight...i m 15 and i m 5 feet 3 inch and m 60 kg..i want to reach 52-55 kg..in orer to luk slim and yes i have a complexion darker than wheatish but less than what we call dark...so i want to lighten my complexion...can u guys pls help!!!!