It's easy. Subscribe as you normally would. Free or discounted trials only apply to new members that subscribe to the 1, 2, and 3 items plans. The trial period lasts for 30 days from the day that you select your plan and submit your information. Your credit card is necessary to send you the first package and billing will begin once the trial period ends, but will NOT be charged until the day after your 30 day free or discounted trial ends.