To change the layout of your pages you simply click on various objects on your page and re-arrange them however you would like. Once you click on an object you'll notice small gray boxes we refer to as "handles". Clicking and dragging these handles will allow you to resize an object. Once you have created your desired layout save your page.

You can make all the pages of your site look the same by creating copies of your layout  with different page names. 

You can also change the entire design of your site by going to your account dashboard and clicking the "Change Design" icon. Please note that changing your design will permanently delete all your website content.