Depending on your Mac's specifications, it may be able to run Windows without affecting your access to MacOS. MacOS natively supports this through Boot Camp and Apple provides full instructions on how to install Windows using Boot Camp on their support site.
You will require access to a legal, installable copy of Windows. University Information Services (UIS) can provide information for students, faculty, and staff on how to obtain a copy of Windows.
UIS may be able to assist with acquiring appropriate software and with basic Boot Camp or dual-boot setup. All patrons are responsible for software installation and do so at their own risk. Georgetown University Library staff will not perform the software installation.