I'm no farmer Brown, and yet I've managed to grow my own vegetables and herbs in a very small plot for 5 years (non-consecutive). I've done it completely organically, as well, and I am of the mind that anyone can achieve the same.
I don't get bumper crops, but I do get enough to extend our food stores for several months in the summer, and that's good enough for me. Everyone should grow some type of food whether it's in a container, the ground or hydroponically. If we all did it, there would be quite an impact on our not-so-happy-at-the-moment earth.
So, here's what is going on in my backyard:
Lovely mint. It grows all by itself with very little need for me at all. I make the most killer Mint Pesto from this and dunk it in almost everything I drink.
Remember those week-old bean plants? Look at them now! Flowers galore means beans galore.
Our lettuce is all eaten up - by us! It made a delicious salad. The radishes didn't fare so well. I hadn't turned over the ground deep enough and they didn't get very big. Live and learn; I'll definitely try them again next year.
Now, stop sitting in front of that computer and go out and grow something!