Below you will find the official Microsoft resource for education customers that walks you step by step on how to do set up an office tenant.
- https://docs.microsoft.com/en-us/microsoft-365/education/intune-edu-trial/set-up-office365-edu-tenant
- Video: https://www.youtube.com/watch?v=X7bscA-knaY&feature=youtu.be
If you are a business customer you can follow these instructions on how to set up Office 365 for Business customers.