Help me, how can I find out the Favourite Pages that I bookmark a lot in Firefox?

Follow these instructions:

Firefox 2 and below:: "Bookmarks -> Organize (or Manage) Bookmarks... -> File -> Export..."

Firefox 3: "Bookmarks -> Organize Bookmarks -> Import and Backup -> Export HTML...".

Note: In Firefox 3, use "Import and Backup -> Backup..." to save a bookmark backup file in JSON format that can be restored in Firefox 3. To save a bookmarks file in HTML format that can be imported by any browser, use "Import and Backup -> Export HTML..."

You can then transfer bookmarks saved in HTML format to another Mozilla application or profile, using the Import from file feature of the Bookmarks Manager.

You can import bookmarks from a file, using the Import feature of the Firefox/Mozilla Suite/SeaMonkey Bookmarks Manager:

Firefox 2 and earlier: "Bookmarks -> Organize (or Manage) Bookmarks -> File -> Import -> From File"

Firefox 3: "Bookmarks -> Organize Bookmarks -> Import and Backup -> Import HTML... -> from an HTML File"

Browse to the folder containing the bookmarks file, select the bookmarks file you wish to import and click "open". The imported bookmarks will be added to your existing bookmarks.

Another thing I find useful is to upload my favorites from the same html file to the Web via a toolbar. There's also a link for the Yahoo Toolbar for you to use. That way if you switch computers again, you'll always be able to download the toolbar to it and once you sign-in, all your bookmarks are there!