There are so many tools on the site to help you reach your goals and so many people who will be happy to support you. I started getting less out of shape by using the amazing exercise videos. I'm 52 and out of shape so I started with the sitting exercises but there are workouts for every level and time commitment. http://www.sparkpeople.com/resource/fitn ess_videos.asp
You'll find that tracking your food will really help you to stay on track and to find the nutritional balance your body needs.