Hi,
The balancing act between carbs, insulin and exercise isn't always easy. A bit like a 3 legged stool, change one leg and it affects the balance of the others.
If you want to ask some specific questions, its more likely to get auseful response on the type 1 forum. Its a good idea to include some info on the type of insulin regime you use, because it makes a huge difference.
Hana has recommended a book Before buying it you could read extracts from it on the internet, (just google it) this will help you decide if this particular doctors methods are for you. His advice is somewhat controversial since he advocates an extremely low carbohydrate diet.
There are others that might be useful such as this one.
Think Like a Pancreas: A Practical Guide to Managing Diabetes with Insulin
Gary Scheiner
how to make insulin work to suit your lifestyle, rather than fitting your life round your insulin. Carb counting, insulin adjustment and more.
or
Using Insulin by John Walsh