Living off-grid without money means possibly lowering your standard of living a lot. With money it may mean lowering your standard of living a little. First free yourself from debt. Second look into permaculture which is mainly gardening and homesteading very close into your house and possibly in your house. Its also poly-cropping vs. mono-cropping. That is similar to companion planting. For example native Americans grew corn, beans and squash together. Some animals and insects are beneficial in gardening. Manures are needed in gardening. This is horticulture basically. I’m not off-grid from the food system at all. But I dream about it. My career puts me on the food system nearly 100%. Read my articles at https://blog.larrydgray.net which may give you some ideas.