Microsoft has rewritten the Office interface.  The "ribbon" has replaced the standard toolbar.  Items are grouped better, but as others say, it is a learning curve.  Overall, a new user could learn pretty quickly, while previous version users will have to hunt a little for the usual commands.  While the program is not a slim version, a standard computer today with 1 gig of ram should have no problems running it.  The biggest cons are the file format is new.  If you save a file, previous versions can not open it.  You have to manually save as a 2003 or older… read full review »