The left panel only shows folders and not bookmarks in a folder. The screenshot shows a selected Other Bookmarks folder and it is possible that this folder is empty. Do you see bookmarks in other folders that you know have bookmarks ? I notice a second Other Bookmarks folder in the screenshot that is located at the bottom of the Bookmarks Menu folder. Did you ever imported an HTML backup as that is a possible reason for seeing this folder? ----- If you use Sync, best is to disconnect Sync temporarily during troubleshooting. You can check for problems with the <b>places.sqlite</b> and <b>favicons.sqlite</b> files in the Firefox profile folder. *use the "Places Database" -> "Verify Integrity" button in "Help -> More Troubleshooting Information" (about:support) If errors are reported with "Verify Integrity", close and restart Firefox or reboot the computer and retry. If "Verify Integrity" cannot repair places.sqlite, rename/remove all <b>places.sqlite</b> and <b>favicons.sqlite</b> files in the Firefox profile folder with Firefox closed. Firefox will rebuild places.sqlite and restore the bookmarks from the most recent JSON backup in the bookmarkbackups folder. *keep a backup copy of places.sqlite in case a new places.sqlite database has to be created *you lose the history when a new places.sqlite is created You may have to restore an older bookmarks backup in the bookmarkbackups folder via the Bookmarks Manager (Library). *Bookmarks -> Manage Bookmarks -> Import & Backup -> Restore *https://support.mozilla.org/en-US/kb/restore-bookmarks-from-backup-or-move-them See also: *https://support.mozilla.org/en-US/kb/fix-bookmarks-and-history-will-not-be-functional *https://support.mozilla.org/en-US/kb/cant-add-change-or-save-bookmarks You can use the button in "Help -> More Troubleshooting Information" (about:support) to go to the current Firefox profile folder or use the <b>about:profiles</b> page (Root directory). *Help -> More Troubleshooting Information -> Profile Folder/Directory:<br>Windows: Open Folder; Linux: Open Directory; Mac: Show in Finder *https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data

Many thanks for your detailed response to my query but I'm in my eighties and find such instructions way beyond my capacity. Is it possible to give me a simple step-by-step set of instructions to follow so that I can back up my book marks? I have attached a further print screen of my book marks page in case that helps.