Start a Garden.
I have been working a square foot garden. I grow 16 different plants in a 4x4 foot area.
Takes a little organization but it is well worth it. You can grow your vegetables in less space . There is a link to the system I use in resources to help get you started.
Build your own solar and wind energy producers:
Or buy them. I have solar panels that produce half of my energy:
3- panels for 229.00 + shipping:
1- 2000 watt inverter 159.00 + shipping
2- deep cell 12v batteries New: 139.00 ea. I got mine by doing some bartering. (Trading ) The higher the cranking amps the longer the Batteries will hold and produce energy:
Build a solar cooker and solar heaters. There are links to the free plans in the resource area.