Simple is important. I have found with the few people who I have tried to help that simply understanding what is and isn't a carbohydrate can be challenging. They've been fed so much misinformation for starters (fruit is healthy, whole grains are healthy) and their emotional/physiological attachment to certain foods interferes with their ability to truly take in the information. Then there are the issues of discipline and commitment which certainly are influenced by their emotional attachments to food. You have to really want to do this and have some faith that it is going to work at getting you what you want. Otherwise there is so much inner and outer noise just waiting to derail you. It then becomes too confusing and people give up and return to their old habits. So I'm with Dr Westmen, keep it simple, at last at first. You can add the fancy nuances later if you are so inclined.