Welcome and, as has been talked about in many places, it is far easier for someone with no MS Office experience to learn the newer versions than it is for those who have used Office 2003 and prior to learn the newer versions. With those who have used the prior versions, the difficulty lies in that you knew where things were but someone moved the cheese.
It really becomes quite nice after a while of using it. You tend to find that things have been grouped more logically than they really were before. But, as is with any change, it takes time and effort to get past the initial shock.