That’s an easy one!  In the words of the School of Hotel Administration’s assistant director of instructional technologies  “We definitely recommend PC’s over Mac’s”.   You can find more details about why here https://www.hotelschool.cornell.edu/students/orientation/computer.html including what operating system is recommended, laptop versus desktop (whatever you prefer), and more.  You can also find more information at the university’s website http://www.it.cornell.edu/services/guides/computer/  including how to connect to Wi-Fi when you arrive on campus and any fees associated with that.

During Orientation, you will also be attending a Business Computing workshop to help familiarize you even more with the Microsoft Office suite, but you will be in a computer lab for that and will not need your own PC.