You want to do some DIRECT ACTION? Start with the parking strip right in front of your house. It is City Property- reclaim it. There is enough space there to take care of a significant part of your grocery bill.
It is a truly revolutionary act to use the output of the system to build infrustructure that lowers your dependence on the system.
Start by digging out a small trench where the turf meets the sidewalk. This will catch water runnoff and make the rest of this easier.
Then, plant any fruit or nut trees you want (perferably on the North Side of the yard to give the rest of the yard light.
put down a layer of wet newspaper or cardboard. Add a layer of compost, grass clippings, and foodscraps. Add a layer of woodchips for mulch.
Water each layer heavily.
Plant large seeds directly under slits in the newspaper.
Plant small seeds in trays in your kitchen window. Once they get big enough, put then in your yard.
Help your neighbors. I bet you have enough materials right now to move to a state of a little more self-sufficiency.
Focus on plants that are perrenial so that you will get long-term payback for your effort.
Spend Less then You Make
Don't Store Savings in a Bank
Put Your Savings Into Investmest that Lower Your Initial Cost: Energy Efficiency, Self-sufficient Gardens, Organizing Your Life and Time.