RE: Guide needed to subscribe trial version for dynamics 365
Hi Zaub,
Here is the thing that you are missing.
After you create your Dynamics 365 trial, navigate to portal.office.com.
In there on the top left corner of the navigation click on the button that looks like 9 small squares, and select Admin.
This will open the Office 365 Admin center.
Click on Billing and Purchase Services.
Under Enterprise Suite, select the subscription you want to trial, such as Office 365 Enterprise E3 or Office 365 Enterprise E5.
If you want the Small Business Suite, select Office 365 Business Premium, Office 365 Business Essentials or Office 365 Business.
When you select (hover over) any of the subscriptions that you want, you have an option to "Buy Now", or "Start Free Trial".
Select "Start Free Trial", and it will navigate you to the next page where it will ask you to confirm your Trial Order. Click on the Try now button, and you will get a confirmation number and asked to continue. It will navigate back to the admin center where it will show a message that the setup is incomplete, and you click on the Go to setup button.
Hope this helps.