Great topic! We grew up always building a small garden. This one is where my parents have retired and it's been built for about 30 years and the garden has been steadily maintained for the past 20 years (we moved, rented and then they returned after my father retired).
These are pictures I took last year (June I think) when I was working up at Fort Lewis, WA for a few months. As you can see, it's not really that big, but I've spent plenty of time weeding; my father uses the tiller every fall/winter and gets a truck load of manure added in. In the back corner is his compost...also a great source to dig worms for fishing:thumbup: You can also see the high fence due to the raiding deer they have to keep out.
They don't make a ton of food, but a lot of supplemental sources. It's really a hobby of my dad as he grew up on an orchard farm in eastern WA.
What you can't see is the small miniature horse and goat pen off to the side. My sister lives with my parents and has a few goats (show goats...useless) and a walking, biting little future equestrian glue bastard
I have the "Square Foot Gardening" book and it's a great primer and one of my personal goals I want to try in the next year or two. As CW4 mentioned, it's hard to do in the military as once you get something built, it's time to move on

I'm hoping the next move is my last...
I like the square-foot method as it lets you see what does well and what you like the most. You can increase the production if needed or cut where you don't. Additionally, this method is great for the smaller backyards and where you don't want to invest in a tiller. There is some science to it as you can add some of the anti-bug plants around your garden as well...
For those just getting started, I think this is the best method. The larger the garden, the more work and attention is required...you could easily wear yourself out and get disappointed. Start small and work to what is best for you and your family. I personally don't care for corn as it just takes up too much space for such a small yield...you really need a much larger footprint. Potatoes are perfect and you can stack tires for raised beds...getting a ton of potatoes. A fruit tree or three is another great idea...one that needs to get started now if you want produce in the next 4-5 years.
I envy those with the gardens now...I'm way behind the power curve!
ROCK6