How do I pay for the lessons, and what happens after I pay?
What happens after the payment
The lessons you paid for wait on the "My Lessons" page, under "Not Assigned", and you schedule them from there.
A lesson pack never renews: nothing more is charged.
Cancelled a lesson at least an hour before it starts? Its price goes to your See Guru balance. A refund for unused lessons goes to the balance; within 14 days of the payment, support can return it to the card or to PayPal on request. Lessons already held are not refunded.
A course or a monthly plan
The "Checkout" page also has the tab "Subscription": a course or a monthly plan. Above the button it says what is charged today, when the next payment is and how to turn the renewal off. You turn the renewal off on the "Subscription" page in your account.
How you know it worked
"All done" appears, and on the "My Lessons" page the new lessons wait under "Not Assigned".