O365 Fair

That's something we are doing at the moment, it's still getting off the ground but management has to buy into the value of super users and give them the recognition that this role adds to adoption.  The idea is to create a network of super users that can support each other and really engage with other staff in their location. The super users are being supported with training, a learning zone, which has an area especially for them, where they can ask questions with subject matter experts.  

Here are some resources that may help.  Firstly you have to check out FastTrack if you haven't already. The http://fasttrack.microsoft.com/office/resources/envision has lots of material including flyers, posters etc.  Make sure to check out the Office 365 Adoption Guide, Build a champions program and Success Factors for Office 365 End User Engagement whitepaper, linked from here, under a Create Plan. Hope that's of use.