You can bookmark your favorite website in Firefox, so you can directly go there just by clicking bookmarks. But while organizing them you accidentally deleted some. Don't worry! Firefox automatically creates a bookmarks backup folder in windows vista where all bookmarks can be restored. Following steps will show you to restore bookmarks in Firefox:
  • Click on Start
  • Go to Computer
  • Open "C" drive =>Username
  • Type “\AppData.” in address box on the extreme right side of C:\Username\ (C:\Usersname\AppData)
  • Press Enter
  • Double click on the Roaming folder =>Mozilla =>Firefox
  • then go to profiles folder
  • Double click on folder in it
  • Open the folder Bookmarkbackups
  • Find a separate Firefox bookmarks backup
  • Select the date you want to restore, right-click and copy it to your desktop
  • Then in Firefox select the Bookmarks tab and click on Organize Bookmarks.
  • Select the File tab, click on Import
  • then select the file that you copied to your desktop.
Its Done! Your bookmarks backup and restore is complete.