Best Buy and Microsoft have teamed up on a Behind the Tiles series of events to spur on Windows Phone sales that borrow a handful of Apple cues. Running from Thursday to as late as May 17, some stores will be holding workshops that both let users try the overall lineup and undertake a "deep dive" into the Lumia 900 with an instructor. The events will be catered, and even developers and enterprise users will get the "latest info," Microsoft said.