If you already have installed the OneDrive app and are using it for your personal OneDrive account, you can follow the detailed instructions from Microsoft available below (you can also view them directly from here) on how to add your student OneDrive account to the app to use alongside your personal one.
Remember, 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.