Adding a Graph content part to a content type, will indicate that content items of that type will be synced to the graph.
Todo: explain settings
To create a new Content Item you will need to select 'New' from the side menu and select a 'Content Type'. Once you have selected a 'Content Type' you are then able to enter the details and either 'Publish', 'Save Draft' or 'Preview' the Content Item.
To view and edit existing 'Content Items you will need to select 'Content' -> 'Content Items' from the side menu which will take you to the 'Manage Content' page. You will then be able to 'Edit', 'View' or 'Delete' items.