I want to get in shape. What nutrition and exercise program should I follow?

There are several diets and training programs depending on your specific goals. To improve overall physical fitness it is recommended to combine some sort of low impact aerobic training (e.g. swimming, biking, pilates, gym cardio equipment) with stretching exercises such as yoga. You can combine these workout routines with a healthy diet high in fiber and protein and low in sugar and carbohydrates. For strength and muscle gain try high load resistance training of all muscle groups combined with protein supplements. For weight loss you should avoid extreme one-time diets and exercise routines, on the contrary, focus on developing long term healthy eating and exercising habits that will not only help you control your weight and cardiovascular fitness but also maintain a healthy lifestyle in the long run.