Exercise is a must for long term fitness and improved health. First fill out a par-q or physical activity readiness questionnaire. If you answer no to all questions and are sure your doctor would approve of you beginning an exercise program, then use this pdf to help you begin.
There is no hurry. I know you want to be thin next week. Get started now and next week you will be closer to your goal. Each goal you want to achieve is only a numbr of days away. Those days are going to pass and you will either have done what it took each day to arrive at your goal or you won’t and wish you had. Best of luck and may you have energy and determination to see you through to your goal.