I will be presenting on May 2nd 2013 in the London Office 365 User Group.
My session is
SharePoint Online – External Users Defined SharePoint Online provides the tools to share content with external users. In this session, we are going to explore what does Microsoft mean by an external user, What are the options for sharing content with external users and how to define an external sharing strategy.
You can register for the event here Waiting for you!