WHAT HAPPENED ?? MY BOOKMARKS AND EMAIL ARE GONE !! WHERE ARE THEY ??

Let's calm down and take a deep breath! I'll need more information, how did you update your Firefox? Did you Refresh your Firefox?

Hi, Firefox 57 changed the toolbar area. Could you check:

(1) To show the bookmarks toolbar

To turn different bars on and off, you can use one of these methods to show the toolbar list and select the desired bars there:

• right-click (on Mac Ctrl+click) a blank spot on the tab bar (or the "+" button)
• (menu bar) View > Toolbars
  On Windows, tap the Alt key to activate the menu bar temporarily.
• in Customize mode > Show/Hide Toolbars (see: Customize Firefox controls, buttons and toolbars)

To turn on the Bookmarks Toolbar, Menu Bar, or other bars, click it on the list.

(2) To add a bookmarks menu button to the toolbar

Please see the "How do I add the Bookmarks Menu button to the toolbar?" section in this article: Bookmarks in Firefox

Does that get you closer to what you need?

Where was the email before?