Welcome to the forum and good luck with your project.
Read around the forum (especially sticky threads) and get lots of advice regarding both exercise and
nutrition. Decide on an appropriate calorie level to make sense for
weight loss based on your own data. Get a free account on fitday.com. It will help you track your food and make sure that you do not have too many
calories. It is not just fast food, sweets and sodas that cause people to pile on the
pounds (although cutting these out is a great start).
Fitday.com will also help you to make sure that you are getting the right amount of all sorts of nutrients that the
body needs to be healthy.