I suppose you have to find your marks, give it your own touches like deciding what desktop icons you want, cleaning up the metro screen, playing on whatever strengthes the UI has.. Such a things are needed for every new desktop UI.
On XP it would have been cleaning up/sorting by name in the start menu, enabling the status bar in the file manager, getting a wallpaper, or whatever you think you need.
Biggest problem with Windows 8 might be the learning curve, i.e. wtf is this stuff for?, what other hidden things are there, etc. Not even every one has experience with smartphones/tablets except perhaps for the most basic stuff (contacts, browser)
Where's the menu bar, where's the notepad, where's freecell etc.