I have a BlackBerry Curve 8320 on T-Mobile with the "BlackBerry Feature Enabler" (free) and I'm on a family plan. I am able to turn on the wifi antenna and surf the web using the built-in browser. However, in order to do so, I had to go through the browser's Options. Under "Browser" in "Browser Configuration," choose "Wi-Fi Browser," save, and you should be good to go.
As for the other apps, you just need the service books pushed to you. Call customer service and they should be able to take care of you.