You can add a default title tag and description for your home page by doing the following from your website admin:
Click on the Search Engine Optimization icon.
Click on Description & Title.
Enter a description and title for the website.
Click Save Changes.
This description and title will also be used for any pages that are missing a title tag. The description is used throughout the website. There is no need to have individual descriptions for each page as most search engines do not consider this information for ranking, such as Google, Yahoo and MSN.