This list does need a little updating....but it can give you a good idea of what needs help:
http://www.albc-usa.org/cpl/wtchlist.html#chickens
That said--the first thing you need to do is figure out what you want in these chickens...eggs, show, meat, etc? What do people in your area want?
Next, what is your climate? I can tell you right now that certain rare breeds do very poorly in heat, others die when it gets below freezing and still others are very hardy no matter what.
If you live somewhere cold...pick a breed with a pea, walnut, rose or cushion comb. Brahmas, Wyandottes, Orloffs, etc. If you live somewhere with blistering hot summers, avoid big fluffy birds and go for something with a large single comb--like blue Andalusians, Minorca, or white faced black Spanish.
Lastly, you won't really make too much money off chickens or eggs. Trust me...I have tried. I have come to the conclusion that specializing in no more than 15 breeds works best for me and if I wasn't so obsessed, I'd concentrate on one or two breeds at the most.
That said, find your breed and focus on it. Cull, cull, cull....start showing and build a name for yourself. My chickens now make enough during the breeding season to pay their own feed bill through the winter. They also bought 13 tons of hay for my four horses for this winter, financed another coop project, paid for my yearly internet bill, my domain name and my website for a year.
Also, consider joining the ALBC, SPPA or the APA. Network. Find breeders who specialize in the breed you're interested in and avoid hatcheries.
Of course, if you're just wanting a chicken to lay eating eggs...hatchery stock is just fine....