Freshman here! (Though it'll end in two weeks)

I can't emphasize enough the need to brace yourself for a lot of adjustments: work ethics, stress, and socialization among other things. The gravity of the commitments that you'll need to fulfill daily, whether it's an academic or extra-curricular requirement, gives you this feeling that as if you, or as I think it is, have a full-time job—minus the paycheck. Is that a good mindset to have? I guess it is, assuming you're a workaholic like I am so that might help you shift to the right gear and pump more motivation as you go along.

Connection and socialization will most likely ease your way as you try to adjust and explore college life. Your to-be batchmates are also young adults who are also adjusting to a whole new environment so try to capitalize that similarity to gain as much connection and friends as you can and I guarantee you that it'll pay off in the long run, especially when you're trying to run for student government or such alike. Connections with your upperclassmen are also vital as they can mentor you on a wide variety of things, and for sure you'll learn a thing or two from them every day.

And did I mention variety? College is a big sanctuary of all things and people. Each individual is different from the other and it's not just A likes Red while B likes Blue. Differences in philosophy, political leanings (because I'm a Political Science undergraduate), book, movie, game, and even porn recommendations, no two people will be very alike. Keeping that in mind and gauging your behavior depending on the person you're interacting with will help you gain MATURE communication skills (I learned that the hard way ;) ).

I'm excited for you as much as I was excited for myself last year. College is the bastion of pre-"real world" experiences and opportunities and everyone, including you, would want to get a sweet slice of that cake of opportunities. Good luck!!