Reddit reviews The Backyard Homestead Guide to Raising Farm Animals: Choose the Best Breeds for Small-Space Farming, Produce Your Own Grass-Fed Meat, Gather Fresh ... Rabbits, Goats, Sheep, Pigs, Cattle, & Bees

Glad you had a good hunt - the damned things are all over where I live. I compete with wolves, bears, and big cats, though, so maybe next year's numbers will be lower.

You can totally do ethical chicken/poultry if you have at least a half acre of land (house included). It might be a stretch to get a meat poultry operation going, but you can definitely end up drowning in eggs with six or ten birds - remember that each lays an egg a day. If you're interested in a healthy, ethical source of protein, you'd be very hard pressed to do better than home-raised eggs.

There are some great books about this that can help:

The Backyard Homestead

The Backyard Homestead Guide to Raising Farm Animals

Back to Basics

The first book is kind of "general backyard gardens and farms", the second one focuses on animals in particular, and the third is an older book that has information about gardens and livestock, but also loads of cool information on how to preserve foods, build traditional crafts/furniture/construction, etc. - way broader scope than the first two. I definitely recommend all three, though.

There are roughly two ways to go.

1. Large scale industrial farming. I don't know much about this. Get a degree in agriculture and work your way up.
   
2. Small scale organic farming. For this, start out small and plan to not be profitable for a while. Then when you grow your operation plan to be marginally profitable for a while. That's likely where you'll top out. Consider getting a small flock of pet chickens first then get a larger flock, expand into ducks or goats or pigs, etc. If and when you're ready to sell your farm goods sell local at a farmers market or to local restaurants or a local co-op and charge extra because you're humanly raising the animals.
   
   This book helped a lot.
   
   
   tl;dr Remember, software is one of the more profitable fields so be prepared to lose money or, at the very least, make way less.

You'll love it! I actually need to get the companion book, Guide to Raising Farm Animals. I think it goes more in depth into butchering, processing, but I'm not sure.