This is a link that will give you a good idea of what you can put together that will work for you. Note that as Cole Robbie said, you will want to have lots of organic material-leaves and what not incorporated into the soil. It is the micro-organisms in the soil that free up the nutrients from the additives for your plants to use, and they want organic material!
http://www.cheapvegetablegardener.co...hat-nutrients/
I like to use alfalfa pellets from the feed store, bonemeal, compost, wood ash, epsom salts (just a bit), fish emulsion(when I cook fish for the family, the non-edibles get ground up for the garden), a few ground up Tums or egg shells. I also will spread around coffee grounds, cocoa bean mulch, composted manure if source known and healthy, leaf mulch, string algae and fish poo from the pond, granite dust for the trace minerals.
Stacy