Adding to the great info from Paul and patruth58, I would highly recommend Permaculture Gardening on your acre of land. This would likly give you a crop this year, and it would build up a good healthy soil while being a low maintainance type of gardening... it's a no-dig or no-till type of gardening I have been doing lots of reading about lately and find facinating. I am doing my yard in this way.
Currently my favorite book on this subject is one I got from the local library and now would love to buy my own copy
It's called Permaculture in a Nutshell
, written by Patrick Whitefield. One thing he describes that comes to mind for your problem is: put down a layer of cardboard or newspaper onto the ground, right over top of any weeds or grass that are growing there. Then you put a layer of manure over this. If you want to plant something there you make a pocket of soil in the manure, poking a small hole in the cardboard in this spot too. You plant into the soil. Your top layer is mulch. The book said straw, I'm going to use wood chips as that is what I was able to get for free. Put down a good layer of mulch, leaving it open a bit where you put your plants.
The cardboard or newspaper stop weeds from coming up from the soil, they also compost down to feed the earth and build new soil.
The manure feeds your plants and the soil, and becomes soil through composting.
The mulch layer holds in moisture so it takes very little watering to keep your plants happy and healthy, as well as do the composting process.
Hope this helps. I"m just learning too, but am happy to share some of what I've read about so far and am excited about for my own place.