Hi wesman,

press Alt(keep pressed) + V + T + M to restore the menu bar.
If that doesn' work take a look here:
Restore the Menu bar in Firefox
Also, for details on how to use bookmarks see this article:
Bookmarks in Firefox
Did this help you?

Make sure that toolbars like the "Navigation Toolbar" and the "Bookmarks Toolbar" are visible:

• Firefox > Options
• "View > Toolbars" (press F10 to display a hidden menu bar)

Open the Customize window to set which toolbar items to display:

• Firefox > Options > Toolbar Layout
• View > Toolbars > Customize

• Check that "Bookmarks Toolbar items" is on the Bookmarks Toolbar
• If the "Bookmarks Toolbar items" is not on the Bookmarks Toolbar then drag it back from the toolbar palette in the customize window to the Bookmarks Toolbar

• If missing items are in the toolbar palette then drag them back from the Customize window on the toolbar
• If you do not see an item on a toolbar and in the toolbar palette then click the "Restore Default Set" button to restore the default toolbar set up

• https://support.mozilla.org/kb/How+to+customize+the+toolbar
• https://support.mozilla.org/kb/Back+and+forward+or+other+toolbar+items+are+missing