There are a lot of things that must be considered when trying to lose weight. What are your goals? How dedicated are you to reaching them? Are there any variables like family history, medical conditions, diet restrictions, etc. that need attention? Once you know your goals and your limitations, a plan is needed. The research shows that diet and exercise combined is the best way to lasting results. Aim for several small meals a day that include protein and a complex carbohydrate source. Fresh fruits and vegetables, lean meats, low fat dairy, high fiber foods, and a lot of water are all important pieces to the puzzle. When it comes to exactly how much you should be eating at each meal, it depends on your age, height, weight, gender, and activity level. The best way to find out how much to eat to lose weight is to work with a Registered Dietitian (RD). If that is not a possibility, look for reputable sites that have online estimating tools. Once you know your calorie needs, your RD can work with you to find a realistic plan that works with your lifestyle. As for the exercise, any is better than none at all, but a combination of cardio and resistance training is most effective. It is important to set realistic goals and to set smaller goals along the way to keep you motivated. Measure progress in other ways besides just weight too. Track your body fat percentage, inches (like waist, hips, etc.), or have an outfit that you're aspiring to wear. Keep a food journal to keep yourself aware of everything you intake everyday. Drink lots of water. Don't wait until you're thirsty. If you're thirsty, you are probably already mildly dehydrated. If you have questions about specific exercises or foods, this site is full of great resources! You can ask any of the experts listed for more info. I hope that helps you get started. Good luck, and keep us posted on your progress!