Office365 can be downloaded from Course Resources, and more detail about that is on the 'Free software downloads' page on this guide.
As long as you're on a programme of study at the university you can download Office365 onto your personal device as well as using the online version through Course Resources.
IT Services have instructions for downloading Office365 onto a Windows 10 or 11 device, and also for downloading onto a Mac. You can access the guidance at the links below.
How to install the Office 365 apps on your windows 10 or windows 11 computer at home (student guidance)
How to install the Office 365 apps for Mac OS on your Mac at home (student guidance)
If you run into any problems, or have questions, please contact IT services for help.
You can:
Visit them in B Block (B)
Email them
Phone them
Use the live chat service (bottom right of the IT Knowledge Base pages)