Hope it helps you
There's lots of websites that can give you a good start. I got some little pocket books over here in the UK that were about £4 each and give basic details of GI as well as carb content.
From what I understand, including some of the slow release stuff in there with each meal can help to spread out the food absorbtion rather than having it peak badly. I guess if it peaks whilst your insulin is still only 1/2 way through working then it explains the 2 hour high, 3 hour low. Or it does to me. Not that I know much these days! Anyway, I try to throw chick peas or beans of some kind into pretty much everything I cook these days.
Don't seem to have many friends left for some reason....
Gary