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!
Nice find, tellsells! i wasn't aware of that app. Thanks!
Posted from my CrackBerry at wapforums.crackberry.com
You should really check it out. It's a fantastic app for anyone who needs a lot of appointments listed on the home screen. (It also has BerryWeather integration turning any theme into a Today theme along with a weather slot.)The developer is also very responsive and there is a thread on it: http://forums.crackberry.com/f35/detoday-466213/