You are definitely on the right track. An endocrinologist is a doctor who specializes in diabetes.
I was diagnosed when I was 13 so I went through the puberty years with the big D. From what I've seen, it's tougher during the teen years but I'm sure you will get through it without any major complications. Hang in there and stick with us. We will help get you through this.

Just take it one day at a time. Testing is really important and so is taking your insulin. Start out your day by saying "I'm gonna check at least 3 times today" and when you do that, start increasing the number. That should help.