What exactly do you do at UT Freshman Orientation?

I'm going to freshman orientation soon at the University of Texas at Austin, and I have no idea what to do there. I know you have you register for classes and meet with advisers, etc. But I have absolutely no idea what to do when you get there. Where do you go? What do you say, who do you talk to? How exactly do you register for classes? How do I know which classes to register for? I have no information, and I looked all over the UT website and found no useful information as to what specifically do you do, where specifically do you go, who do you talk to, etc. I'm so clueless about this, and I have no idea what to do. Please, someone, help! I need to know EXACTLY what to do, otherwise I'll be wandering aimlessly just wondering where to go.