I've been fortunate recently to try my hand at writing a test-lab guide that's helpful if you have an interest in Office 365: Configuring an Office 365 Trial Subscription

I wrote a blog post at the Microsoft Test Lab Guides blog that has more details:

This new TLG uses a fictional Microsoft account and company and the on-premises base configuration test lab to set up a working trail subscription for Office 365 ProPlus, which includes Exchange Online, Lync Online, and SharePoint Online.