Once you have ordered your Microsoft 365 subscription(s),  the next step is setting up your Microsoft 365 environment. Microsoft offers a full suite of documentation to become more acquainted with getting started.  We've highlighted a few helpful articles from Microsoft below which will assist you with getting started:

• Adding your domain name to Microsoft 365
• Adding users/email addresses
• Assigning a subscription to a user
• Migrating emails to Microsoft 365