That’s right. AppStore is live, folks. Update your iTunes to v7.7 (just hit the “Check for updates” option) and you’ll find a shiny, new icon leading you down Apple cash-corridor.
There are way to many applications to even try and preview them for you here – especially with a variety of free applications, like AIM, just waiting for you to give it a good home. So, just update your iTunes application and hit up the iTunes Store. From there, the AppStore will be an obvious click away.