How can I start investing in realestate so I can create a cash flow?

Can you answer Lisa A’s question about Factoring?:

I don’t have any money for down payments, my income is low, (about 3,500 per month), my credit score is low, and I’m in the process of selling my home in a short sale. I want to create this cash flow as a means of supplement income and then eventually my main source of income. Is this doable?

Medical Receivables Factoring