i phone problem adding Cydia Store App to my phone

it says to add categories first i just got this iphone and dont know what todo?
can someone help me.
Answer #1
Jailbreak tuts which will help you greatly…
http://www.google.com?t=2802051&highlight=
Answer #2
Cydia should be added automatically when you jailbreak… don’t really understand what you’ve done
Have you jailbroken it?