Your subscription will begin immediately, starting with the current issue.
Subscription periods are time based, running from the date of purchase for the duration purchased e.g. 12 months. At the end of the subscription it will automatically renew unless the renewal has been switched-off previously. New editions will be delivered to your Pocketmags Library on web and in-app as they are released for the duration of your subscription. A handful of titles offer 'all-access' subscriptions, which include back issue access for the duration of your subscription, this will be stated on the purchase page.
Please note that Special Editions are not included in subscriptions (unless otherwise stated).