Your CuriosityStream membership, including your 30-day free offer, will begin when you click "Start Trial" on the sign-up page. You may cancel at any time before the end of the 30-day offer and you will not be charged. To cancel, click on "Your Account" and follow the instructions for "Cancellation". Your membership will automatically continue at the monthly subscription rate unless you choose to cancel before the end of a given month. We cannot refund or credit your account for partial months. See Terms of Use for more detail.