Go to your browser, typically this is either Edge or Chrome.
In the address bar type 'office.com' to navigate to Office 365.
Press 'Sign In'.
Input your school email address and password.
After successfully logging into Office 365, the dashboard should be on screen. This screen will display recent files and the Office web apps on the left hand side of the screen (such as Word, Excel, PowerPoint, Outlook).
Documents created here automatically save to your OneDrive.
In the top left corner of the screen you will see a 9 dot tile like this
Pressing this will give you quick access all your Office 365 applications.