Hopetown, I believe you are on the wrong Forum, this is the Nuendo 6 one...
If you want to get an straightforward overview on how Wavelab 8 works I suggest you sign up for the groove3.com
http://www.groove3.com/str/ and go through the 2 WL 8 classes.
They are very informative.
As to why so many mastering engineers are not using WL, because a majority is on the MAC and WL just recently became available on the MAC, WL is incredibly powerful and once you grab the concepts you're most likely going to love it