Sorry about your loss, I've been there several times in your shoes and it's just as bad if not worse than losing a family member. Sorry, I should say that after 10 1/2 years that dog is a family member. I don't know it all on breeding dogs but I'll be glad to share what I do know.
My dad and I raise and breed brittany's, we've had several litters and like has been said we read up on it but most of our knowledge has come from doing it and being around it for so long. Dad and I have some awesome hunting dogs, he's been asking me when I'm going to turn one into a field trial champ but truthfully neither of us has a desire to SHOW our dogs as most would think. Dad and I belong to an upland hunting club and we don't excatly show our dogs, we take them out and they PROVE themselves. Don't get me wrong showing them is not bad but what are your intentions? Our intentions are to raise bird dogs, we're good at that and getting them to the point they can go home to good owners and they'll hunt is what we do and ENJOY. Some go as pets and we know that up front, but most importantly we are able to choose who gets our dogs anfd who we turn away and we have turned several away in the past. Anyway back to the point, recouping costs isn't hard but it ain't easy. The thing about hunting dogs is that people usually want dogs that are from good hunting dogs or from field trial champs, not that all offspring will be excellent hunters but that's what "most" people weigh heavy on and look at. That being said we hunt our dogs and PROVE them rather than SHOW them. I guided 2 hunts over the weekend and someone who was watching us wanted to buy one of my dogs, there ain't enough money to get it from me but he wanted it and the way it stands right now if I had 6 or 7 pups I'd have them all spoken for to hunting families. Between the two of us we have 4 dogs and we've got roughly $2000 in kennels if we were to start from scratch (concrete floors, chainlink kennels, feeders, electricity and hardware, water systems etc.). We had a litter a few years ago and had 13 puppies that survived, we got our cost plus out of it but we were selling puppies cheaper than we would have liked too just to get rid of them (working with 13 pups isn't easy). The next year we had 6 puppies and because our dogs had built more of a name for themselves when people found out we had Britt's we sold them about double than what we got the year before for 2 reasons: (1) we had more time to devote to each pup as far as working with it and so on and (2) our dogs were well-established hunters and could back up with proof what we claimed they would do. We put up 1 advertisement flyer at the clubhouse and all of them sold to patrons or people who had hunted with us. The next litter (or 5 pups at least) is spoken for by word of mouth/sight, that's when you're doing good but it takes alot of work and expense to get to that.
When I said we've got our costs back it took three litters, 4 years and if we ever figured our time in on this we'd find we work for 00.xx an hour, but again we aren't in the business of making money, we're turning out bird dogs. Unless you have a large amount of dogs, a lot of time and unfortunatley (hate to say it) more of a puppy mill operation with several litters per year and not as picky as to who buys a dog from you then you aren't going to be profitable enough to call it a money maker. If you want to enjoy being around dogs, enjoy lots of work and have patience and the money up front to call it a hobby then you'd be a good candidate. I don't recommend getting into it for the money though.
You asked where to find good breedstock, what we did was to find features we wanted (blocky heads, tempermant, character, muscular/taller/stocky builds, coloration [orange and white] good health records on parents and parent dogs that were good hunters) and from there we built our own breedstock. More groundwork in this alone that anything else. Alot like farming where you'll learn more by the old fashioned trial and error method than what you could ever read in a book. I'm hooked onit, try it out yourself and see how you like it, but take soem good advice and don't go into it for the money.
If you want to ask me anything PM or email me.
Rick