How Do I - Screenshots

Chromebook

Take a Full Screen Capture
Chromebook
     ctl + switch window key

Take a Partial Screen Capture
Chromebook
    ctl + shift + switch window

Windows 10 
printscreen key
alt + print screen (puts active window into clipboard)
windows key + printscreen key (saves in pictures folder)

Partial Screenshots
Can use snipping tool (search for it)

On Surface
Windows Key + Volume Down