TURN ON CAPS LOCK

Hit Alt + search (the magnifying glass or Assistant icon), the latter of which is in the place you'd look for a Caps Lock key. You'll see an arrow appear on the bottom right notifications bar and a pop-up will alert you that Caps Lock is on.

TURN OFF CAPS LOCK

Tap Shift to turn off Caps Lock. 

OR

Alternatively, you can also tap Alt + Search to turn Caps Lock off, or tap on the time icon in the bottom right corner, and click Caps Lock is on.