A very quick summary of Office 365 blogs, wiki’s and articles… Exchange Online – the first place to start (includes some useful screenshots)… Office 365 Beta BLOG and WIKI …  An RSS feed off the blog is a useful source of Office 365 news. ( Take a look at the Microsoft Online Services Team Blog also…) If you’re interested in the coexistence between Exchange Server ‘On-Premise’ and Office 365 then use the Exchange Server Deployment Assistant – this is updated for Exchange 2003, Office 365 coexistence only at the moment – Exchange Server 2007 and 2010 to follow… (You need some Exchange 2010 infrastructure on-premise for coexistence with Exchange Server 2003 and Office 365 by the way.) Check out the ‘Infrastructure Planning and Design Guides for Microsoft Online Services’ ; in particular the ‘IPD Guide for Exchange Online – Evaluating Software-Plus-Services’ (The download includes a spreadsheet, presentation and document - go for the Word doc. to start with.) The ‘Office 365 Beta Service Descriptions’ are available on the Microsoft Download Center.  I would definitely recommend a read of these. They’re not a difficult read and even if you skim read them they’ll give you more than a feel for what you can and can’t do with Office 365 before you get there. A couple of articles it is worth reading: Office 365 Beta: Completing provisioning of archive in the cloud from your on-premises Exchange 2010 server Office 365 Sneak Peak   Content and Code event on the 8th February.. A couple of non-Microsoft resources: ‘Office365Answers.com’ and ‘ Office365Rocks’ Fond of a tweet? @office365   @msonline ( @me ) (#office365 #exchangeonline #bpos #cloud) Or even Facebook Can also recommend a couple of books about cloud computing in general which I’ve enjoyed: ‘Management Strategies for the Cloud Revolution: How Cloud Computing Is Transforming Business and Why You Can't Afford to Be Left Behind’ by Charles Babcock ‘The Big Switch: Rewiring the World from "Edison" to "Google"’ by Nicholas Carr And if you happen to live in the UK and need to purchase some stationery …!@?!...(read more)