Wow -- that's a tough situation without enough information. What is the living situation, what are your skillsets or education, and how are you feeding yourself, making any recurring bills? Presumably you don't even have a cell phone or computer. Here in the States, our unemployment is still very very low so jobs are available just about everywhere. Picking up a job or three is not hard. Retailers like Lowe's hardware will hire nightstock for $15/hr. With a month, let's pretend that is 40hrs x4.3, that would only get you to $2580 before taxes. However, Bank of America is hiring at $25/hr, so that could be $4300. Combine the two and you'd be there after taxes.
As for resources, since your homeless encampment or abandoned VW bus or the men's shelter is next to the public library and the YMCA, you have access to public computers. A free google gmail account and google voicemail account has at least ways to communicate, text and have a voicemail box for communicating. That gets you to facebook's BuyNothing group for your area, plus Freecycle. In your copious amounts of spare time, you accept everything within walking distance. As off-cast cell phones come up hourly while your neighbors do their annual upgrade, you can have something personal with a camera and wifi (which works from the library, public stores and many other locations 24/7), you can open that ebay account and craigslist to sell off your freebie items gathered from society's refuse.
Uncomfortable, but not undoable.
