Pages are used to store the content to a site. Images and files can be uploaded to locations and then related or embedded to these pages.
To add content to a page, go to 'Pages' on the navigation bar. Find the page you want to edit in the 'Site Structure' menu on the LHS, and select it.
Navigate to the 'Content' section of the page, where you will be able to add different types of text, files and media. Click 'Edit' below the navigation bar, or the red button highlighted in the image below, to begin editing.
Once finished, select 'Save' at the bottom of the page.
Click here to see how to add different types of content to a page.
Or try watching some video tutorials for adding content!