WANTING to change is the hardest part, you got that one nailed!
The Primal Blueprint will get you the body of your dreams. Since you are poor, read all the stuff on the 'Getting Started" tab, download all the free guides, and ask for the Primal Blueprint book for Christmas.
Spend the next couple weeks reading Mark's blogs and Definitive Guides. Pop on here to ask for clarification, but don't get too wrapped around the axle reading forum posts.
Once you know what to eat and what not to eat, develop a good exercise regime that matches your lifestyle. Pushups, pullups, sprinting, and squats can be done real cheap. No need for a gym membership.
Spend the next several years learning what works for you in terms of carb levels, calorie intake, and exercise recovery. Pay particular attention to getting quality sleep, good nutrition, and letting go of stress.
You'll do great!