Login to www.google.com/accounts
and click the edit the Multipile sign-in option which i have highlighted in the image above which will take you to a page like this.
Select the 'ON' check box and select all the options given below it and then click save. Go back to your gmail
Click the drop down arrow right next to your gmail address on the top of the page. You will get a clickable option of 'Sign into another account'. Which will take you to the normal Gmail login page. Enter in the Username and the Password of your other Gmail account. Click the drop down box again and you will notice that your default ID is also featured there. Click on the email ID's to switch between 2 email ID's.
You can add as many Gmail ID's you want.
Please check out the video to see a live demonstration of how to make it happen
You can add as many Gmail ID's you want.
Please check out the video to see a live demonstration of how to make it happen