Once you have connected your Ring doorbell and/or camera to your Alexa account via the Ring skill, here are the commands that are available, including the ability to watch a live video feed from your Echo Show, Spot or Fire tablet.
To view live feed:
Alexa, show [Ring device name]
To stop live feed:
Alexa, hide [Ring device name]
Alexa, hide the front door
Alexa, go home
Alexa, stop
To view last recorded video:
Alexa, show me the last activity from [Ring device name]
Alexa, show the most recent event from [Ring device name]
Alexa, fast-forward
Alexa, fast-forward 10 seconds [or any timeframe]
Alexa, rewind
Alexa, rewind 10 seconds [or any timeframe]
Alexa, pause
Alexa, play