I'm a doofus to not suggest this before! Your own copy of my little GI book will be on it's way to you later today!
It's great as it doesn't push any of the specific diets but just explains some of them and then has the tables of food, with them coded red, yellow or green depending on their GI rating. YOu can eat as much "green" foods as you want, some yellow foods and red foods should be avoided or eaten in small quantities occasionally buffered by lots of green foods. Easy peasy.
I haven't been diagnosed officially with hypoglycaemia but I've known since I was about 12 that I have problems with my blood sugar - low blood sugar is a major migraine trigger for me. I decided to change my diet after reading Fibro: The 1st Year and realising I had almost all the symptoms of both acute and chronic hypoglycaemia. Having made the change I won't be going back as it's helping so much!
PS. Can you email me your postal addy so I can check I've got it right?