Your first payment is made immediately when you subscribe.
Week to Week Subscription
You will re-bill on the same weekday you subscribed. (e.g. Friday, Friday, Friday)
You will re-bill on the same weekday you subscribed in two week intervals
You will re-bill on the same date of the month you subscribed (e.g. 12th Jan, 12th Feb, 12th March)
If you choose to save a little money by pre-paying, your subscription will also renew on the 'anniversary' of your signup in the appropriate interval to your pre-payment.
For example, subscribing on the 1st of June for 6 months pre-paid, your renewals would fall on 6th December, then 6th June the following year etc.