The welfare office will give you lots of training classes for free and they'll pay for community college type classes if you apply to them. Many state/ county schools also have subsidized or free tuition.
I haven't found any work at home type schemes that make sense. The secret shopper things also don't work out. And certainly don't pay them to get on their list either!
Only thing that I've found that will bring in a LITTLE cash is to find some factory outlet type place to buy stuff at 75% off and sell it at 50% off on ebay. I've been studying this awhile now and I'm convinced it's possible to make some money, again not a fortune, if you can find a supplier that is selling something cheap that people will buy on ebay. You're not going to make money on ebay by buying at garage sales, selling craft stuff you've made,....there's too many people selling on ebay now. But if you can find someplace near you it could be possible.