Blackberry Features

Hi, When I first got my fully flashed blackberry I hooked it up to the computer and upgraded everything. Little did I know you can't do that, so I had to have it reflashed.

Now I am wondering what exactly I can do with it.
Can I use bluetooth?
Can I use it as an MP3 player? If so, how?
Can I get any APPS? If so, where?
Can I use Documents to go?
and one last question, can I sync it with my email?
Any other suggestions? Do's and Don't do's?

Thank you so much to anyone who takes the time to explain this to me:clapping:
I truly appreciate it, I have spent countless hours on the internet trying to figure this out

bluetooth yes
mp3 yes...If I have to tell you how to use it you don't need a blackberry
Apps yes..research a program call aerize wifix. There are several infomative threaRAB in the pda/smartphone sub-forum
Documents to go yes
Your can go to your email to check, but a flashed phone will not support push email as cricket does not have BIS. You can get a few email apps to work using Wifix, but again do some research.

P.S. you will find all the info you need if you search in the pda/smartphone sub-forum