I have a brown thumb. My horticulturist girlfriend once gave me an arranged plant bowl swearing they were hardy plants that I would barely have to take care of. Still killed it.
That didn't stop me from wanting a vegetable garden. I had this convenient dirt patch in my backyard that was perfect for little ol me. I built up a raised garden using torn up sidewalk concrete, poured in a yard of compost, and bought a soaker hose and timer. After all, if the soaker hose is on a timer, then I won't have to worry about forgetting to water.
This is my third year. Each year it gets a little better. I seem to do well with tomatoes and basil. Last year I had good cucumbers, but not so good on zucchini. This year I have great tomatoes, zucchini, spaghetti squash, basil and Thai basil, and a jalapeno plant.

