After signing up for your Office 365 plan please allow up to 24 hours for provisioning.
Support will contact you and send your Admin username and password.
Once you login you should follow the steps below to complete the setup for your account.
Add your Domain so that you can start using your real email address firstname.lastname@example.org:
Click the Domain menu item on the left and then the + Add Domain button. This will start the wizard to setup your domain and update the DNS.
We suggest having your DNS setting open when you start this. This would typically be your domain registar or 3rd party DNS provider
For more information on how to update your DNS please view the articles below.DNS for specific hosting providers.
Login to the secure portal with the new : https://portal.office.com
Setup your domain:
Create new users in your account
Start using office 365