The Organic Gardening

Restoring Soil quality for Organic Gardening?
I will removing junk (scrap metal and car parts) and gravel in order to increase space for my vegetable garden. The soil will be most likely in horrible condition so I wanted to know some of the best methods to restore it. Some things I already plan do to are:
1) break up the soil
2) add bits of compost
3) plant legumes to add nitrogen
What else should I do, and what challenges should I expect?
The best way to fertilize your Organic Garden in the long run is to Vermicompost. Vermicomposting is easier and has more nutrients than traditional compost. Just how the directions of the following website.
http://www.vcompost.com