Well done for joining the forum, Peter, it's a good place to chat to people in the same boat. Don't feel bad for feeling scared and confused, it's natural, and sometimes you just have to have a good cry or rant about it. I got diagnosed 3 years ago, and I remember being quite surprised when my consultant said "You will get upset about this, and that's ok", and sure enough I did get really upset about it (even 6 months later something minor could set me off), because it's not my fault I got it, and it seems like nothing's going to ever be straightforward again. BUT things do get easier.
Try to go to any courses or support groups your clinic runs, and when you're feeling stronger, educate yourself about the different insulins and treatments available, and get on a regime that suits you. When I got diagnosed a friend who's had it 15 years said "It doesn't change a thing - carry your pen and some sweets and away you go", which is a slightly simplified version of things, but I know what she meant.
Ask lots of questions and feel free to rant on here any time!