I installed Office 2007 running through parallels on my Mac Mini just to see what it was like ...... Sorry I think the new user interface is grim.
It does take some getting used to. I found the easiest way was to try to forget everything I knew about Office already and start again from scratch, as if I was coming to Office anew... I also forced myself to use it and nothing else for a couple of weeks until I got comfortable with it. It is a big change interface-wise, but once I got past that I grew to like it (and I don't say that about Microsoft products lightly 😉). In fact now when I go back to Office 2003 on Windows I find it quite clunky and unnecessarily menu-based in comparison.