It's a Curve 8330 so I'll be rockin' OS4 when OS6 is out . So far though I love the customization and am enjoying the phone more with CrackBerry.com as a resource. I look forward to the days when I can school n00bs on how to use their Berrys.
Check out the BlackBerry 101 How-To Lecture Series ! This will help you with the basics such as downloading apps, themes, wallpaper, ringtones. It's also a good idea to browse the forums and read as much as possible. Many questions you have are answered there already!