A few tips that I've used
I too have a garden spot that has been untouched by chemicals etc and I love knowing that what I'm eating is even better than what I can buy because I pick it and walk into the kitchen and use it. Nothing compares to the spinach I grow in my own garden, there really is a very big difference. A few tips I've found are: put a 3-6 layer of fall leaves on your garden and till them under, forget the manour (sorry, I'm sure how that's spelled) also you can put left over produce, leaves etc. from your garden under the leaves to till into the soil. Last year I tilled in all the tomatoes I couldn't consume and this last summer I was picking tomatoes plants like they were weeds, so be careful tilling things under with seeds in them. Also, plant a couple rows of different lettuce and my favorite, spinach.....then be sure to leave plenty of room to plant another crop in about 3-4 weeks. That way, when the first planting is gone you have another crop almost ready. I have loved having a garden.....it's lots of work but so enjoyable. Good luck!!!