I've got really bad soil, mostly sand with not much organic matter. For starters I did 2 - 5' x 25' plots with a walking aisle between them using the "double dug" method and bio-intensive plantings. Each spring I add about 1-2" of good compost on top, lightly raked but not incorporated into the soil. No tilling at all. Never walk on the garden soil itself, use a board to stand on if I have to stand on the garden, so as not to compact the soil. But with 5' width, can reach in pretty well from each side. No fertiliers, herbicides, etc. Bio-intensive reduces weeding to about zero. Amazingly productive. A 5' x 5' patch of carrots (just scattered the seeds and no thinning) produced 15 lbs. And with the loose soil, they pulled right out. Also got radishes, lettuce, green beans (7 lbs. into the freezer plus what we ate), broccoli, 22 winter squash harvested, and cucumbers. Each year I rotate my crops into different areas of the 2 patches.