1. Download Facebook All exxtension zip file from Magento
2. Login to magento website admin panel. Navigate to System->Magento Connect-> Magento Connect Manager. Login again, if required.
3. Under "Direct package file upload" section Browse the downloaded zip and click on upload button.
4. After sucessfully installed Navigate to System > Configuration and click on Configuration.
5. Go to Left menus and click on "Facebook all settings". Configure facebook api key and secret and all other settings and click on save config button.
Note:- If you found 404 page not found error please logout and login again in admin area.
1. Navigate to CMS > pages
2. Then navigate to the page you want to place facebook all widgets at. Click on "Content" tab on the left bar. Place cursor where you want to place facebook all widgets and click on "Insert Widget" icon.
3. Select as widget type with name starts with "facebook all" and enter the text you want. Click Insert widget and Save Page. Now you can see the selected widget on that page.