The first order of becoming an REO agent is to obtain your real estate license. Taking and passing the real estate course as well as your state's real estate exam is how that is accomplished.
REO properties require an experienced agent who knows the market and the selling and purchase process well. It would be in your best interests to get a few transactions under your belt before diving in to list bank-owned properties.
There are training courses available to licensed agents on how to list and market bank-owned properties but working with a institution that gives you the REO leads is how most agents obtain the listings.
Hope this is helpful!
Prudential Connecticut Realty