Buy a copy of the APA Standard of Perfection, Read it about the breed and variety you really want to work with until you think you understand it, then read it 10 more times and once a week after that. Then consult the APA Master breeder / exhibitor list to see who has recently achieved this honor. Contact them in regards to a few starter Breeder trios, and be patient they will not be cheap and will not likely be readily available.
A good breeder worth buying from will discuss his birds openly regarding common faults, breeding and selection processes for both males and females, wether it is a single or double mated line, and other topics of conversation that may be needed to insure your success in working with the birds.