PLEASE Need HELP and a some instructions.

[pokerface251]

I have a BB 7520, I need to know what desktop manager to use and what version. What oprea mini will work best for the 7520. What exact service book I will need. I really need good instructions from start to finish. I bought the 7520 thinking maybe I could use it for texting my son who is at college and little did I know, but I can not text anyone with this phone until I found this site. Please anyone, I am pretty good with the computer and I can follow instructions too. The phone is working great with my Boost sim in it, But that is all I have is a phone and direct connect. The programs that are in my phone are (Enterprise Activation, Blackberry Messenger, Map Quest Find Me, TeleNav 4.4) and none of these do nothing.

Thanks