We are just starting a 3 month Teams pilot with HR, Communications, a developer IT team, as well as our IT infrastructure department. We scoped our pilot to a Skype replacement only so online meetings and chat, with milestones for recording meetings and uploading and file sharing, then lastly Planner. We are running it for 3 months and just starting it on Monday. We already have a bunch of questions around how to handle data classification and government retention polices that we have to meet. So we as a SharePoint support team are learning along side the pilot. We aren't in 365 yet as an org we are moving from SharePoint 2013 and trying to rebuild our intranet at the same time to SharePoint online. I also gathered together some of the best links to videos from MS to get started with training and notes about naming conventions and things like that for our company. So its like a training/governance page that I just built in a communications site and then pulled into teams as a tab. I plan to run the first group through it on Monday. We also started a 365 Early Adopters Team in teams and made it a public team so anyone can join. We plan to host channel online meeting where we demo what teams can do and as a space to take questions from staff about teams and how to use it as they run through the pilot. Hope this helps.