You can join to be a volunteer on organic farms with WWOOF. It’s the organization that shares the sustainable life. If you work there as a volunteer, you will get the green way of living and know that you can produce food without destroying the environment with organic gardening because organic farm is the form of agriculture that relies on crop rotation, green manure, biological pest control, and mechanical cultivation. The purpose is maintaining soil productivity and control pests, excluding or limiting the use of synthetic fertilizers and synthetic pesticides, plant growth regulators, livestock feed additives, and genetically modified organisms. You can join with many people from worldwide. Not only the green experience but the organization will also provide you the accommodation and food. Lastly, don’t for get to think of American Visa if you want to go to USA.