Fall semester is days away from beginning now. For some, it's the first, for others it might be their sixth. Either way, it's upon you, and it's time to start panicking.
Just kidding, you can probably wait a few more weeks for that. Right now, the main concern should be making sure your classes are registered for. Nothing worse than getting to campus on the first day of the session and not actually having anywhere to go. Don't even get me started about entering a class a couple weeks in, good luck.
Once that's figured out, make sure you have a way to afford them, considering the "free world" is still being charged to learn. That's another article, though. If you're sure that your daily schedule including school, work, and everything in between is sound, you can move on to making sure that your dorm or your apartment looks nice, and feels even better to live in, because this is your new home.
Any new roommates not named "Mom" or "Dad" should be reached out to, that way you can start to feel out who you'll be living with, day and night, for at least the next few months. Trust me. My first year I met with 2 out of my 3 roommates for lunch, and the roommate who didn't grab lunch with us stole my detergent.
If you've got your schedule, and your living situation all figured out, the only thing left to do is stay focused (okay now you can start freaking out). You're an adult now, whether you and your parents are ready to accept it or not (persons reading this may or may not be 18 years of age or older at the time of reading this). No one is going to remind you that you have an exam coming up that you have to study for, or that it's time for dinner. As simple and basic as some of these things sound, you'd be surprised about how many people simply don't get it right. It's time to buckle down a bit and brace, or re-brace yourself for this part of the world.
If you're on board with all this, you're pretty much set. Of course, there's no way you'll know whether you're ready or not until you're in the middle of some trouble, but let's hope you're not. If you ever find yourself lost, just take a deep breath, and take care of business, because if you don't, nobody is gonna do it for you.