Getting to Know Windows 10 for Employees can show your team the new features of Windows 10 including security. They can also get familiar with personalizing Windows, drawing with Windows Ink, and more.
Sadly, someone decided to write this guide in PowerPoint (pptx) so if you don't have Powerpoint, don't bother. The guide should have been written in Adobe Reader format if you ask us.
Otherwise, it's a well laid out guide if your employees need a well laid out tutorial or refresher. Getting to Know Windows 10 for Employees is basically Windows 10 for Dummies, but don't call your employees that.