Some great sessions on Office 365 from TechEd 2011 North America:

• Overview
  • Microsoft Office 365: The Future of Productivity, Eron Kelly
  • Microsoft SharePoint Online Overview, Mark Kashman
  • Microsoft Lync 2010: In the Cloud, Ziv Fass
• Developer
  • Collaboration in the Cloud with SharePoint: A New World of Productivity, Eron Kelly
  • Developing Collaboration Solutions in the Cloud with Microsoft SharePoint Online, Chris Mayo
  • Developing Powerful Workflows in the Cloud with Microsoft SharePoint Online, Chris Mayo
  • Exploring the Office Developer Story in Microsoft Office 365, Tanuj Bansal
  • Four Ways to Leverage the Microsoft Lync 2010 Client APIs in Your Applications, Marcello Farjalla
  • Top 10 Insights on Development of Microsoft Exchange Server and Microsoft Lync Server 2010 against Microsoft Office 365, Albert Kooiman
• IT Pro
  • Microsoft Office 365: Deployment Overview, Zach Beers
  • What Do Existing BPOS Customers Need to Do to Prepare for Microsoft Office 365?, Michael O'Neill
  • Microsoft Office 365: Identity and Access Solutions, Ross Adams
  • Microsoft Office 365: Directory Synchronization, Jono Luk
  • Deploying Microsoft Office Professional Plus Subscription, Brian Shiers
  • Microsoft Exchange Online in Microsoft Office 365: Simple Migration Live!, Ram Poomalinga

Office 365 Training Course on MSDN: The course includes 7 sessions, over 10 hours of video, and 16 labs as both an offline training kit as well as an online training course on MSDN.

Getting Your Own Office 365 Beta Account: Sign up at http://office365.com to get access to the Beta.