Hey lee, Welcome to SMF!!!
The above advice is good, especially staying away from the white stuff, sugar, flour, rice, however you need to eat from the basic five food groups at every meal and you need carbs for energy so think of anything that is pithy in your mouth, like lentils, corn, peas, sweet potatoes (we use them to make fries), apples, bananas, these replace the carbs from not eating the dastardly whites and you will have the energy without the sugar spikes, add to that wheat or whole grain breads, brown rice or wild rice (cooked in beef, chicken or vegetable broth to make it palpable), then measure your servings, I use a small bowl that holds about a cup for my carbs, veggies that are not in the carb group as much as you want, meats about 1 1/2-2 cups (but I cheat a lot here), dairy products 1/2-3/4 of a cup and lots and lots of water, lastly measure your blood sugar daily (I measured before and after each meal to find out what works for me), whether it is the strips or buy an inexpensive glucose tester, I recommend the tester because it keeps a record of your tests and you can see what foods works for you after each meal and your weekly and monthly averages.
Now in my opinion the most important reason for learning how to eat, lose weight and be healthy is not to be the "winner" but to find out what works and then teach you bride, I'm certain you don't want to be the "winner" and end up losing her later on.
Here are a couple of links for you to digest, they are for diabetics, if you aren't diabetic already then you can learn from them so that you don't become one.
I hope that helps, have fun with your smokin' and be sure and post the Q-view.