Both Grammy and Red have great suggestions- I would go ahead and join those lists Red mentioned and let everyone know you're looking for a pet pup to join your family in a year. Most breeders will be only too willing to help advise you, *especially* when they know that you're doing your research.
Beyond that, I just want to re-emphasize the most important point Red brought up: don't even THINK about buying a puppy from anyone who doesn't health test. If they think CERF is a water sport, run in the opposite direction. If OFA and PennHip elicit blank stares, tell them that's all you needed to know, and walk away. This is your future baby, and you don't want to take chances. It definitely sounds like you're on the right path,though.
Another thing you may want to try is looking up some events in your area. If you would like to talk to a few breeders in person, try attending a dog show in your area. You can look up AKC conformation events by going to
www.americankennelclub.org, and searching "events and awards." Watch the Rotties, and then ask handlers of dogs you like if you could speak to them about their animals at a convenient time. Most people will be only too willing to oblige (just try to do it after their ring time).
Anyone you buy from should have their dogs competing in some sort of event evaluated by a impartial party. This means conformation, Schutzhund, agility, obedience, etc. etc. And if they do more than one thing, even better! People who are "just breeding pets," have no business breeding (for every breeding of great working or show prospects, there are plenty of pet puppies born).
Good luck with your future family member! It sounds like you're off to a great start.