Once downloaded, you can run Office on up to five machines (PC or MAC). You can also run Office Mobile for Android or Office Mobile for iPhone on up to 5 mobile devices.
Office versions available are:
Office 365 ProPlus for PC (Office 2013 ProPlus base applications)
Office 365 ProPlus for Mac (Office 2011 for Mac base applications)
Office Mobile for iPhone
Office Mobile for Android
For more information - LINK
Please Note: Office 365 is only free during the duration of your course, so please consider this before removing any previous office versions.