Let's start with the Custom Content Module, which is an optional content item that is included with all new sites. First, highlight the Custom Content Module content item from the Navigation screen and click "Edit" under the Content site, NOT the "Navigation" side.

This will take you to the "Enter/Edit Content" screen for this content item. See notes in red for more info on each area of this page. Note if you do not want this content to display at all, you can simply check the "Hide this content item" checkbox and the content will be saved on your site but will not show on the live version of your site.

For initial setup, the only thing you'll need to adjust is the actual text inside the module, including the title (You will not want your site to display the words, "Custom Content Module." You will want to rename it to describe whatever you decide to put there. If you decide you do not need that module, you can also check the "Hide this content item" and save it for later use if you need it.)

When you have finished adding content to this module, you will need to click the "Save" button at the bottom. Remember, the updates will not appear on the site until you press the "Publish Site" button (unless, of course, you have adjusted your site settings to update immediately).