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I understand you have requested a 30 days trial account of Office 365. However, I cannot find where you are facing the problem from the description. Would you please provide more detailed information about the issue?
To get start with Office 365, you can refer to the online help centers:
Online help center for Professionals and small business subscriptions:
Online help center for Enterprise subscriptions:
There are a lot help articles and useful information in the help center, which should be able to guide you to configure your Office 365.
Is there any other help needed here?