There are three types of actions you can take in Google Sites: Page Actions, Page Templates, and Site Actions.
To access Page Actions, select the More options button from the upper right-hand corner taskbar.
There are many options you can choose from, select that one that best suits your uses.
To access Page templates, simply select the More actions button from the upper-right hand corner.
You can either choose save or change a template.
Site actions allow you to edit how your site looks as well as your permissions.
To access Site actions select More actions, and you can find them under the dropdown menu.
There are a lot of different actions to choose from, so pick the one that best suits your interest.