Get Microsoft 365 setup by visiting microsoft365.com/setup. Sign in to Microsoft account, enter the product key and get apps quickly. Microsoft365 setup wizard using microsoft365.com/setup site, follow instructions and install apps.Go to www.microsoft365/setup to get all the MS office 365 apps on your devices like Windows, Mac, and smartphones.
Add your domain,
Verify your domain.
Add your users.
Migrate email and contacts from another email service that uses IMAP (such as Gmail).
Setup online services, such as email and Skype for Business.
Change your nameservers.
Regards,
Willjoe