Just got my Tour this past week. It's my first BB so I'm learning a ton. Anywhere I can find all the notification icons and what they mean? I've got one or two that I can't figure out.
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!