Hey There,
If I were you here is what I would do.
1) Eliminate all the bad stuff from your diet: ALL sugar, candy, soda, ALL fried food, cookies, cake, ice cream, french fries, potato chips, white rice, pizza, bacon, donuts, canned foods, boxed foods(macaroni and cheese, hamburger helper, etc...)
2) Include in your diet: 7-10 glasses of water, raw vegetables like they are going out of style(carrot/celery sticks, salads, sliced tomatos(technically a fruit), radishes, spinich, cucumber slices, etc..), skinless chicken breast, fish, unsalted nuts, fruits(apples, oranges(no more than 1 per day), grapes, apricots, plums, papayas, melons, bananas, and pears, steamed veggies, brown rice.
3) Take a daily multivitamin, I like the Vitalogic brand because it's all natural(no synthetics used!).
I think this is a great way to start. Also, stay with us on the boards here and learn and share as much as you can.