Diabetes Go

Pre-diabetes (prediabetes) diagnosis…now what?

Yesterday I went to the doctor and he told me that my blood sugar was 108. Which i later found out that that means i have ‘pre-diabetes’ or ‘prediabetes(not sure which one is the correct term)

So what does this mean to me?
Are there any specific foods i should avoid?
What is my next step?
What should i watch for?
My doctor says he’s going to send me to a diabetes prevention thing. That’s fine, but what do i do in the mean time?
What type of exercising would be recommended?
I’m 5′3 and 121lbs. How much weight should i loose?
Will this only delay my getting type 2 diabetes or prevent it all together?

More details:
He didn’t say anything about medications yet.
I don’t eat candy or a lot of sugar.
I don’t drink too much soda, maybe one a day.
No, i don’t exercise. Yes, i’m planning to start.