finding out about bloodlines

Hi Im new to the group . Was wondering if you wanted to find out about bloodlines and do your homework how would you go about doig that ? I have a blue girl and she is as sweet as can be I love the breed . They are smart and really are a great breed but I sure would like to learn more about the bloodlines of the breed . I there anyone out there that can give me info on how to go about finding out about shows in mo. not ACK show but other show that maybe just pitbull shows and people that own and show and raise and know more about the breed and blood lines . Thanks Odile