There is no need to buy the Microsoft Office suite, as the Department of Education supplies this software for free. There are also alternatives such as G Suite for Education (Google apps).
Google Drive provides UNLIMITED free storage for students and staff, and has a desktop app: https://www.google.com/intl/en_au/drive/download/
Microsoft’s OneDrive also provides UNLIMITED free storage for students and staff: https://www.office.com/
Adobe Creative Cloud is FREE for students and staff: https://creativecloud.adobe.com/