Is your goal to lose body fat or simply gain muscle? Or is it a combination of both? If you want to lose the extra weight, then cardio workouts are the thing for you. If it is big muscles that you are after, then add weights training to your weekly routine. If you want to drop the weight and achieve better muscle definition, then your weekly program should include cardio workouts plus weight training.
The best types of cardio workouts for fat loss include ‘weight bearing’ exercise like fast walking, jogging, aerobics, football, soccer, tennis, squash, snow skiing and so on. Weight supported exercise like swimming and cycling are less effective in shifting unwanted fat stores.
For a safe and effective weight training program see a gym instructor or a personal trainer rather than designing your own. They can tailor a weights program to your needs and provide instruction on how to handle the weights correctly without injuring yourself.