Thanks.. I was worried about hawks being a problem.. we have a few around..Just be aware, while all pigeons are susceptible to hawks, and there are ways to minimize exposure, it seems rollers are especially targets. For one, I think their rolling attracts predators (just a thought), and two, if they get chased away too far they are almost without a doubt lost, whereas homers will usually find their way back home after being scattered from a hawk.
This guy has a pretty good collection of materials about pigeons, but this part of his site (albeit maybe a bit dated) is a good resource for finding breeders when you're ready to make the move (select your state and look at the breeders near you): http://mumtazticloft.com/default.asp
I also think poking around local facebook groups, whether they be racers or performing breed fanciers, etc, can help. They are usually willing to help with getting new people birds to start a loft.

Where my dh works is in the process of getting rid of the local pigeon population and he's going to try to trap some to bring home.. not sure it'll work but if it does they will be what I start with. Ive followed along on some of the other threads with the peeps on this one about how to go about letting them raise squabs and then releasing the parents and traing the offspring.. I hope I can do it..

If not... I'll be looking into purchasing some.. may have to rethink my choice of breeds tho..

I will deffinetly check out the link .. already keeping an eye on Craigslist.
