1. The first and the most important rule is that Google will make a payment to you only when your account balance is $100 or more. Also, these payments are made by Google within 30 days of the last day of calendar month during which you attain an account balance of $100 or more. If your account balance is less than $100 on the last day of the month, the balance just rolls over to the next month and this continues till you actually have at least $100 in your account. You can easily check your account balance by logging-in into your AdSense account.
2. Obviously, Google will only be able to pay you only if you provide them with the information that is required for payments. This includes the Payee information and contact details that you specified at the time of signing-up for an AdSense account. Though you can edit most of this information, country and Payee name cannot be changed at this stage (i.e. after the account has been approved by Google). If you need to get these changed, you will have to close your AdSense account and open a new one.
3. You will also need to submit your tax information using the Tax information link on the My Account tab. This information is required irrespective of your location and, in any case, Google would not process your payment without the tax information.
4. You also need to specify the mode of payment. This can be done through the Payment Information link on the My Account tab. Just check the options available for your location and choose the one that best suits you.
5. As soon as your AdSense account balance reaches $50, Google will mail (snail mail) a PIN number to your payment address. You will need to enter this PIN into your account before you can become eligible for payments from Google.