Nerdy, you're thinking too much...just sit down and breathe...

I remember last Fall when I was just starting too...I had taken a year off of school entirely, even though that wasn't in my plans. I was so worried that I wouldn't find my class or there wouldn't be any seats left or if I was on the waitlist, then I'd have to stand and then I wouldn't even get into that class. It was frustrating. I had seen parts of the campus before going too. And my aunt goes there too, so she showed me around, and we went to go find my classes. Our schedule was different, but I knew that if I needed her, I could call or text her and she'd know where I was.
I had gotten all my books the weekend before school started. It was some heavy stuff, Man. Lol. But I was like, should I bring these books? What else should I bring? Just a notebook and papers? Pen? Pencil? Marker?! Do I get to sit? What if there isn't enough chairs? Do we just walk out when it's time over? And if we need to go to the bathroom? How's the grading scale? Am I going to fail?

Nerdy, don't think about it too much. It's unnecessary thinking, trust me. The first day, there will prolly be some booths out in the main areas telling you where to go and that stuff. And you can always just ask someone else.
And get some sleep.
You can't stay up late anymore.

Good luck! Smile. =)
We'll be waiting here for you.