Upon logging into your website, you will be directed to the Dashboard, which is the central location through which you can make edits to your website, such as adding/managing pages and posts. Once you are logged in, you can always access the Dashboard by hovering the cursor over your site name on the top-left of the screen and clicking Dashboard from the dropdown menu.
You can add content by adding either "Posts" or "Pages" to the site through the Dashboard menu. Posts refer to the practice of blogging where entries are listed in reverse chronological order. Pages on the other hand, are static and are not listed by date. Further information on the differences between Pages and Posts can be found in the WordPress Codex.
To add a new page or post click "Add New" in either the page or post menu. To learn how you can add content to your Pages or Posts, please visit our section on Using Page Builder.