Right click a blank part of the Tab Bar and then click "Menu Bar" to remove the checkmark. This will hide the text links and display the orange Firefox button instead.

That worked beautifully. Thanks! But how do I get to the Tab Bar?

If the tabs are at the top (default position), you can move them underneath the location bar where you type in a web address by right clicking either the Home button, or the Tab bar (tab bar is where the tabs appear) and then click "Tabs on top".

Other things you can do:

• To rearrange the layout, repeat the same steps again and choose "Customize". A panel will open and while that remains onscreen, you can move elements like toolbars, buttons etc around and place them anywhere you wish. You can also drag anything you don't like into that panel and add anything you want by dragging it out of there.
  
  
• To replace the status bar at the foot of the page, install this add-on: https://addons.mozilla.org/en-US/firefox/addon/status-4-evar/