Well, that is kinda a general question. I think for many of us who have T2 and are insulin resistant, it really helps to follow a low carb diet. The books "Diet 101,"Diabetes Miracle" and even the "New Atkins for You" all are good diets. If you really want to try to normalize your blood sugars, you might read "Diabetes Solution."
ps. Sadly, the diets that most doctors and dieticians provide us are really lousy.