You can do that in the Library window *To open the Library window, use one of the following: **Using Firefox button (Firefox 4): Firefox button > Bookmarks > Show all Bookmarks **Using the Menu Bar (Firefox 3 and 4): Bookmarks > Show all Bookmarks **Ctrl+Shift+B *When in the Library window: **Click on Bookmarks Menu **In the right pane all of your folders and bookmarks not in folders will be listed. **In the right pane, you can click on the first one you want to delete, then, if you want to delete multiple folders or Bookmarks, press the Ctrl key and click on as many other folders or bookmarks as you like. All of your selections will be highlighted. **When done with your selection, press the Delete key on your keyboard, or click Organize > Delete in the Library menu. **If you make a mistake, you can choose Organize > Undo to reverse what you just deleted; '''''you must do this before exiting Firefox'''''. ***I do not know how many Undo "cycles" you can perform; they are done in the reverse order of the previous adds and/or deletes, so be careful and be sure of your actions. ***If you exit the Library window, add a new bookmark and return to the Library window to undo the previous delete, the first undo will remove the new bookmark you just added and the second undo will reverse the delete you previously performed. See: *https://support.mozilla.com/en-US/kb/Deleting%20Bookmarks#os=win&browser=fx35 **I got to the above by loading this page https://support.mozilla.com/en-US/kb/how-do-i-use-bookmarks then clicked on the blue link "''How can I organize my bookmarks?''" then clicked on the blue link ''"Deleting Bookmarks"'' <br /> ------------------------ <br /> '''You need to update the following plugin:''' *Adobe Shockwave for Director Netscape plug-in, version 11.5 #'''''Check your plugin versions''''' on either of the following links': #*http://www.mozilla.com/en-US/plugincheck/ #*https://www-trunk.stage.mozilla.com/en-US/plugincheck/ #*'''Note: plugin check page does not have information on all plugin versions''' #'''Update Shockwave for Director''' #*NOTE: this is not the same as Shockwave Flash; this installs the Shockwave Player. #*Use Firefox to download and SAVE the installer to your hard drive from the link in the article below (Desktop is a good place so you can find it). #*When the download is complete, exit Firefox (File > Exit) #*locate and double-click in the installer you just downloaded, let the install complete. #*Restart Firefox and check your plugins again. #*'''<u>Download link and more information</u>''': http://support.mozilla.com/en-US/kb/Using+the+Shockwave+plugin+with+Firefox

The Ctrl works fine for bookmarks but it WON'T work for Folders. Any other suggestions?

'''''"...WON'T work for Folders..."''''': meaning, does not highlight folders, but highlights individual bookmarks??? Works fine here and is the standard method of highlighting multiple folders or bookmarks.

Open the parent folder (e.g. Bookmarks Menu) via the left pane. Then you have the folders in the right pane where you can select them.