Hi Chris,
Welcome to the wonderful world of chickens! As pointed out, they are addictive! My son left me his when he went into the Marines, and I'm making big plans to expand!
If you buy from a hatchery, they will express mail the chicks out to you. Make sure you have a brooder area set up with heat lamp, water, food and containment area before they get there. Ordering is very easy, but be aware that they usually have a minimum order of 25 birds per shipment to keep the chicks warm. These are day old chicks and survive on the yolk during shipment. There are some hatcheries that specialize in small orders, but charge a bit extra for a heat source. Some of the hatcheries only sell straight run, or have limited breeds available. Most have catalogs available, so I'd suggest you request several and compare them with what you want and prices, then place an order.
If you don't want to purchase 25+ birds, you can place an order through any feed supply store in the spring, and you can pick up only a dozen or whatever you want.
If you want to locate a breeder of any of the breeds, you can do a search on here or online. For example, I've located a Buckeye breeder that is kinda close by looking at the Buckeye Association.
I have bought from hatcheries and my husband picked up some birds at a local feed store that claimed they were such and such breeds. Not sure what some of them were, but since 8 of them were roos, 7 of them ended up in the pot. They all tasted good, and except for a one or two, had a good amount of meat on them. (Funny thing was, the one's with the most feathers didn't have the most meat!
)
I have seen some laying hens advertised on Craig's list, or if you have access to a local agricultural area ads paper, you may locate something there that are already grown and possibly laying.
Good luck and enjoy!