All UI users have access to Office 365 data storage which is called OneDrive. The space each user receives is 1TB (1000 GB).
If using Windows it is assumed that OneDrive is already installed since it comes with the Office 365 package. If not here's how to install it: Download and installation of Office 365
It's easy to share data with others and you can work at the same time in documents if they are opened in a browser. See various instructions above.
Here on Microsoft's website you can find videos about using OneDrive. Choose the lower section, "Work or school": OneDrive video training
What is OneDrive: