Let's take a step back, go to the 20-yard line, and remember why we're getting jazzed up about this Group Policy thing.
You're jazzed up because you're starting to realize the potential that Group Policy can bring: dictating settings for your operating system and making your world more "standardized."
As you poke around the Group Policy editor, you'll see there are lots of areas that you've already explored, and some we haven't yet explored. You've had a chance to handle the Administrative Templates section within policies. You've explored the Preferences area of the Group Policy Preferences. In the next chapter you'll explore the items in the Security section.
But let's take some time ...