Everyone has good points here. To get faster results always follow 3 rules.
1. Diet: Not just counting calories, make sure its healthy calories (no pizza). You also need to time your meals. Nutrient timing is crucial to boost your metabolism. Try eating smaller meals through out the day. Supplements also helps. vitamins, fish oil...
2. Cardio: Jogging in place is a start. If you have some space try sprinting short distances back and forth. If you have foot injuries try a stationary bike.
3. Weight training: Try training larger muscle groups like legs. Focus on squats and lunges.
A lot of people here focus on total weight loss, which is not an accurate measure of progress. Get yourself a percent body fat scale to really measure how much your losing and how much muscle your gaining.
Keep it up and you will see results...
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