The first thing I noticed was the “Getting Started” links on the homepage
You don’t have to go to “Site Settings” to carry out those changes that you wanted to do as soon as you got your new site. Things like changing the site icon, theme are right here. Even the customize quick launch bar comes handy at any time.
The other feature I liked was the Library tools Ribbon that appears on the top of the page the moment you select the small check box on the “Shared Documents” web part
Cool isn't it