I have been there, broke and unable to put a couple of nickels together in my life.
This will be the easy nickel version of the plan in the book, distilled to just a few bullet points. This is enough information to start changing your life for the better today. You will start losing weight the first week, for sure.
You just have to follow it.
Cut all sugar out of your diet today.
Get moving today. Start doing some sort of aerobic exercise this very day. Get to where you can do 30 minutes a day, 5 days a week. I recommend buying off Craigslist one of those exercise bikes where you pump with your arms and pedal with your legs. Anywhere from 10-40 or 50 bucks or just walk briskly, jog or ride that bicycle in your garage.
Take the medicine that your doctor has prescribed for you, as instructed, without fail.
Just trust me on this. Just do it today. Then when you see the weightloss, your choice, buy the book or not.