A favicon is the little icon that is displayed beside the address bar in your browser, it usually is a mini version of your logo. You can create a favicon here: here.

Once you have created your favcion and downloaded it to your computer you can upload it to your website by following these steps:

Step 1:
Click on the Settings Tab.

Step 2:
Select Website Settings from the menu drop down list.

Step 3:
In the Upload Favicon section press the browse button and locate the favicon in your computer.

Step 4:
Press the Start button to uplod your favicon to your website.

Step 5:
Press the Save button to save your changes.