Hi Srinivas, thanks for your comment and I'm glad you enjoyed the article and are keen to go farming!
The farm I worked on was in Missouri and unfortunately shut down after the farmer decided to move state. However, I arranged that experience through WWOOF (an international organisation that specifically links farms with volunteers). You could also contact UpHarvest directly if you're interested in volunteering with farms in their community.
I'll write an article in the future about how to get involved with farm volunteering - thanks so much for the suggestion! All the best.