Hey all,
I'm no expert either, but have been having pretty good luck building
up soil and improving soil quality by sheet mulching:
1. lay down composted manure, food scraps (no meat or dairy) and other
compostables in a nice thick layer (more than 3")
2. cover that layer of compost and scraps with another inch or two of
cardboard (any plain cardboard, no glossy inks)
3. repeat until you've gotten rid of your materials, like building a
lasagna. One layer of each is OK if you want to just amend your front
yard. If you want to build a whole raised bed, you can keep up this
layering process.
4. On top of that, put straw, wood chips, or some other kind of nice-
looking mulch
Then wait. The cardboard and food scraps will compost nicely and make
nice rich soil. Next year you'll be good to go--all your weed seed
will be dead because you covered it in cardboard for a year. No
pesticides, which is great for the environment. And because you didn't
rely on chemical fertilizers, you don't wind up with imbalances and
other problems with your soil.
It's an inexpensive solution, and you're killing two birds with one
stone. By composting your food scraps, you're getting less garbage in
the landfill, by using it!
Here's a good blog about composting:
http://www.compostguy.com/