I agree with Junnie's advice. As for tangible things to prepare yourself for, I would say famirealize yourself with school's resources even the ones that seem irrelevant at first. Some examples are writing center, EOP office ( first generation and/or low income), transfer events and gatherings.
Stay connected with people but be selective and mindful of where you are putting yourself in. And enjoy the experience. There will be things that you really can not predict, be okay with that. When time comes to make decisions, dont rush your decisions.
All the best :)