1. Visit the Prime Video website or app. 2. Sign in with your Amazon account or create one if you don't have it. 3. Find where it says you can start a free trial and click on it. 4. Next to start the trial provide payment details. 5. You'll get a message saying your trial has started. 6. Now you can watch movies and shows! Note:- If you don't want to keep Prime Video after the trial, make sure to cancel Prime Video Free Trial before it ends to avoid being charged.