Chicken Girl has the idea. Keeping your beds whether raised or not from being walked on helps plant roots. I've recently been reading that over tilling your garden kills much needed organisms. The idea being that you bring these organisms to the top and they dry out and die.
Of course good mulching can hold in moisture and reduce the need for tilling.
Some crops can be done in raised beds but if you're planting for a large big family sized crop it might not be reasonable.
This is why I asked about potatoes. We'd need a large quantity of Potatoes, carrots, celery and onions.
I figured someone would have pics of "potato towers". How many pounds of taters can I grow in one tower? How tall with the tower have to be?
I'd like to reduce our dependence on store bought produce if I can. Of course I need some storage ideas too. Hint: Do not store onions near potatoes. It causes them to sprout.
( I read a lot)