Microsoft Resources
Microsoft Educator Center
Free Microsoft training geared toward educators. There are specific learning paths and badges are awarded to show completion of concepts.
Mike Tholfson Youtube Channel
Mike Tholfson is a product manager for Microsoft Education. He puts out short videos with new features and tips and tricks for Microsoft products.
"You Can in 90" Videos
Quick 90-second videos about various tips and tricks for Office 365 use in the classroom.
Computer Science Resources
Microsoft's curated resources for computer science and digital citizenship. These resources include data and research, curriculum and activities, and implementation resources.