Welcome, Sara~
It would depend on the type of diabetes you have, and how you are treating it. You can probably find all the recommendations you could ever want if you put "book on type ... diabetes" into your favorite search engine on line. Also many books on diabetic diets, glycemic index of foods, etc.
Saturday and Sunday are pretty slow around here...so if it seems you were not greeted with enthusiasm, that is why. Wait until Monday, and you'll see us in action, OK?
Good luck! Again, welcome! HUGS! sheryl