Yes. First-time Yearly Premium customers are offered a 30-day trial. To activate this trial all you need to do is enter a credit or debit card when scheduling a card, or directly on the Payment Info page after signing in.
You will have 30 days to try out the premium services without being charged. If you wish to keep the yearly subscription then no further action is needed. To avoid being charged you must cancel the trial within the 30-day window.