All Pages are stored under the pages tab on your dashboard
This is an example of what the pages tab would look like:
To make a new page one of the new page buttons and this will bring you here:
To start adding content hit the blue “backend editor” button. This will let you add elements to your site. Do not edit the initial text box. After his, there are a couple different ways to add elements to your site. If it is a completely new page you would add them with the Add Element button.
Otherwise, there are various “+” around that you can click to add more elements and sections.
Elements are put in sections, which can house any number of elements. Sections can be organized into different layouts, or can have a different number of columns to hold various elements. This can be done by hitting the tab with the lines on top of the specified section. For more information on elements go to the elements help page. Once you are done editing your page hit the publish button to save your work and post the page on your site. To view your new page click on the view page button on the top bar.
Make sure the the page has draft status until the page is completed. This will keep outside people from finding the page while it is being worked on. Once the page is completed, change the page status to published.