...
* After adding product in cart we will see the following screen with google checkout link. 
* After clicking on Google Checkout link system will connect you to the google server. It carries shopping cart information, shipping methods etc to the google area. Now the further assistance will be provided through google.
2. In Google Area
* You will be redirecting to the following page in google area.
...
In this section if you are existing user i;e, you are already having a buyer account on google then you can sign into this.
* Once you sign in into google account, you will be redirecting to the following screen. 
Above screen is used for placing the order. Here you have to select shipping options from Shipping & Handling circle.
You can also Edit Order from Edit order link. This will redirect you to E-Commerce landing page from where you have selected the product.
Click Place your order now to process further with placing order.