Toward the right end of the main toolbar, look for an icon with 3 horizontal bars like this: <img src="//support.cdn.mozilla.net/media/uploads/gallery/images/2014-01-10-13-08-08-f52b8c.png">. Can you find that one?

Note that Firefox 24 doesn't have the "3-bar" Firefox menu button that came with the Australis user interface, but still have the orange Firefox menu button if the menu bar is hidden. You can tap the Alt key or press F10 to show the Menu Bar. *Tools > Options > Content *https://support.mozilla.org/kb/Pop-up+blocker Make sure that you do not run Firefox in full screen mode (press F11 or Fn + F11 to toggle; Mac: Command+Shift+F). *https://support.mozilla.org/kb/how-to-use-full-screen Are you running a Firefox 24 ESR version or the bare Firefox 24 release? You can find the full version of the current Firefox 32.0 release in all languages and for all Operating Systems here: *https://www.mozilla.org/en-US/firefox/all.html Firefox 24.8.0/31.1.0 ESR: *https://www.mozilla.org/en-US/firefox/organizations/all.html

Type '''about:preferences''' in the address bar and press '''Enter.'''