I believe it was Office 2007 that did away with the old menu system and toolbars in favor the Ribbon, which is really just a toolbar on steroids.  Upgrading from a pre-2007 edition of Office to 2010 or 2013 can be fairly traumatic for someone who is highly proficient with the old interface, as it can be extremely frustrating to know exactly where something used to be and have no idea where they hid it on the Ribbon in the new edition.  Fortunately, Microsoft made an amazing tool that translates the location of an item from the toolbars / menus in Office 2003 to its new location on the Ribbon.

Basically, it shows you the Office 2003 interface and lets you click on the menu command or toolbar button that you want to find in the Office 2010 Ribbon.  Then it flips the interface over to Office 2010 and walks you though how to locate it in the Ribbon. It’s a great tool if you know someone who is making the switch…

http://office2010.microsoft.com/en-us/word-help/learn-where-menu-and-toolbar-commands-are-in-office-2010-HA101794130.aspx#