My question involves criminal law for the state of: Tennessee

I'm going to court in a week for a class b misdemeanor (shoplifting about $120), and I have NO idea what to do. I haven't been in a real court room and have been so busy with other stuff that I won't have a chance to go view a court session.

I just want to get it over with, and I don't have the finances to pay extra money for lawyers or public defenders so I'm just going to plead guilty and hope for the best.

Will there be someone to direct me where to sit/go, when to stand, answer my stupid questions, etc.? I'm pretty clueless.