sorry to hear this. My son is now 5 and was diagnosed at age 4. You will be linked to a hospital with a diabetic nurse, ask her/him if they run support groups in your area.
There is a facebook page " what mums and dads need to know to help children with type 1 diabetes" which i have found very useful, as people from all over the world (but mostly the uk) share experiences/advice and offer emotional support. It may be worth you being a lurker and try to absorb information:there is a lot!
From a personal point of view, I cannot lie and tell you this disorder is good in any way, but i can tell you that it is manageable. We inject 5 times a day and count the carbohydrate value of the food consumed and calculate the amount of insulin required. Growth spurts, illness, the weather, excitement/fear, GI of food, level of physical activity all has an impact on how much insulin is needed. You gradually get to learn how things affect your child, but no 2 days are the same.
You'll get to recognise hypo symptoms. You'll be given advice on how to manage the nighttime. He'll very likely be in honeymoon currently, which will help.
My son was very fearful of the injections to start with and we had to hold an ice pack to the injection site before injecting but now we can just inject with no issues. He doesn't like it of course but has accepted it.
If you have any specific questions, just ask and i'll try to answer. Hope you do find someone in your area who is going through the same thing. It is tough in the beginning when you realise life has changed forever. You'll probably have some very bad days, but you will (hopefully) also have good days where things go to plan and the numbers behave!
wish you all the luck, so sad to hear of the diagnosis, brings it all back for me.