Download the OneDrive from the App Store (you may be asked to sign in with your Apple ID to download the app). When installing you may be asked to choose an account, choose Sign in to OneDrive. OneDrive will be installed and the App Icon will be displayed. Click on the App to open. Follow the instructions and when asked for your Microsoft/Office 365 or OneDrive account, you need to use your student email and University password.
Any files saved in your OneDrive will be synced between your device and your online OneDrive as long as you have internet connection.