I started with Microsoft Office 2007 so I dont have that problem.
I started with Office 95 myself, I mostly use Word and PowerPoint (sometimes Excel), and even if some things has changed during the years, the core functionality has always remained the same. It's really the same in Office 2007 and onwards, Word for example is the same program with the same core functions and capabilities, with the only difference that it has become impossible (almost) to find some functions you want to use, especially those you use more seldom. More than once I have had to use the help function or even google to find out how to do certain things that I simply did without thinking in previous versions, and I consider myself to be an experienced user that shouldn't really have to search for basic things like that. Maybe ribbon UI's are great for some programs, especially those with limited functionality perhaps, but in the case of MS Office I'd say "if it ain't broken, don't fix it".
Unfortunately they did...
