Cheer up Honeybee. I SWEAR it will get better. College has been THE best time of my life. It is a big change from your past life, and I don't think people adequately prepare incoming freshman for just how big that change will be. If it makes you feel any better, know you aren't alone.
I HAD A HORRIBLE first day of classes way back when. I moved 14 hours away to go to school, didn't know anyone else, didn't speak the predominant tongue of the area, didn't understand the culture, hated my roomate, couldn't find my classes, didn't know where the dining hall was & my university issued mattress had a VERY strange odor coming from it. We wont even discuss the multitude of stains on it.
Anyway, I'll admitt it, I shead a tear or two. It was really overwhelming. My father had just passed away and then all of this newness. It was too much, but I met some great people in my first couple of months, and things got a lot better when I rushed.
It was easier for me to meet people, because I lived on campus. HOWEVER, you can strike up a conversation with people in your classes after the prof is done teaching, or arrive early and make friends. You'll need to learn how to "create" conversation before you go through rush, because you'll have to do a lot of it there. Just remember that almost everyone in the freshman classes is going through the same things you are. And the upperclassmen remember what it was like when they were in your shoes. Don't hesitate to ask for help. Go to the welcome week stuff held on your campus. You'll make friends at rush, but it's also important to have friends outside of greek life in order to be well rounded.
That is what college is all about (for me at least) exploring things outside my box; meeting new different people with different life experiences from yours. That's how you will grow. And think of this, you are growing RIGHT NOW. This experience will shape you and help you face tougher challenges ahead.
As for the books thing; call the bookstores FIRST thing in the morning (8AM. Others here can tell you what happens if you wait till 9am to do anything on a college campus,) but call the bookstores (all of them that service your campus) and tell them what your needs are. Most of them should offer some type of book reservation system where they will pull and hold your books till you get there. If not, explain your situation to your professors (during office hours, will give you a chance to meet them anyway, it helps when you are on the border between a B and an A). Most all of them will understand. I even had a prof loan me his book one summer session when I couldn't afford to buy my own.
I have rambeled on enough. I just wanted to let you know that it will get better. College isn't an instant panacea, but it is an awesome experience that develops over time. I have an email someone sent me a while back. I'll see if I can find it and I'll post it here. Will give you some perspective on what to expect.
If I was there I'd take you to lunch tomorrow on campus.
Best of luck!