If you don’t have a student email id, then you can create one by following this method.
And again Sign in by entering your College Id and Password.
Now open any product of MS Office like MS Excel or MS PowerPoint.After that, the MS 365 Office will be installed on your PC.Now download Office 365 from Install Apps located at the top right corner.Then the official MS Office will be opened on your browser.You will see some on-screen instructions, just follow them.