Google Sites Tutorials
Below are several pages which can assist you in customizing the template you choose.
Change the Banner helps you replace the banner at the top of the site, with another image of your choice.
Embedding Items helps you add features such as images, videos, documents and maps.
Domain Name helps you get a custom domain name in the form of www.domainname.com, instead of the default domain given by Google Sites.
SEO tips and tutorials about making your website easier to find on Google.
Change the Logo helps you replace the logo at the top of the site, with another image of your choice.
Creating or Deleting a Page helps you get started with your website customization. Remove any pages you don't need, create new ones and modify the website navigation.