Each user can keep a clear set of shipping addresses under their Account Settings to simplify ordering.
Add a New Shipping Address
Navigate to Email (lower left) > Profile > Addresses
Select Create a New Address
Input all data and click save
There is no limit to the number of addresses you can add.
Define a Default Address
The address in bold is currently set as your Default Shipping Address for all new orders.
To switch the address, simply select Set as Default underneath the other address.