I am reminded to take the trash out.
I would contact FORCLOSURE listing agents in the are in which you wish to work.
You will be expected to have general liability insurance at the least.
if you have your ducks in a row show you are licensed, insured etc and show the accord certs to prospective REO listing agents that should get your foot in the door.
Harold Sharpe - Broker
So Cal Homes Realty
California Department of Real Estate License # 01312992