Theft in Indiana - Class-D felony question?

I made a really stupid mistake in attempting to shoplift some video games from my local Wal-mart, and I spent most of the night in jail before I was released on bond. I'm eighteen years old, and it was around two games that were around $80 together. My courtdate is coming up next month and I was wondering what is most likely going to happen. They said that it was a Class-D felony, which is the apparently the lowest class in Indiana. I am incredibly sorry for what I did. I am going to plead guilty because I accept responsibility and I know what I did was wrong, but I just wanted to know what this is going to lead to, or what the most likely punishment is going to be.