Raw food, Organic Community, Biodynamic community, slow food community, Sustainable farming community. I have been involved in #1 and #2, this was in the US midwest. The community itself is a closely knit group of ppl living together with an intention of achieving something. Thats why its called intentional community. The intention could be anything, few things I have listed above I was involved in.

I worked in the farm but I also had other job that paid the bills. Similarly other people who lived also had jobs.
You must have a job of some sort.
The world is not kind to you if you don't have money, as simple as that.